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Panagiotis Botsinis

Panagiotis Botsinis

PhD, MSc, MEng, MIEEE

About

50
Publications
20,643
Reads
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882
Citations
Introduction
I received the PhD degree in the Southampton Wireless group of the University of Southampton, UK, in 2015, with Thesis title "Quantum-assisted Multi-User Wireless Systems". From June 2015 until February 2018 I had been working as a Research Fellow in Southampton Wireless, focusing on low-complexity quantum solutions for optimization problems in the uplink and downlink of non-orthogonal multiple access systems, as well as in routing. A parallel research avenue included quantum error correction for quantum-based communications. From March 2018 until May 2019 I had been working as a Wireless Systems Engineer at Intel Deutschland GmbH. From June 2019 I have been working as a Cellular Modem Systems Architect at Apple Inc.
Additional affiliations
June 2015 - present
University of Southampton
Position
  • Senior Research Assistant / Research Fellow
Description
  • - Employment of quantum computing in various areas of state-of-art wireless communication systems. - Development of novel quantum-assisted algorithms for substituting complex processes in 4G and beyond transceivers.
September 2014 - January 2015
University of Southampton
Position
  • Digital Signal Processing Tutorial Leader
Description
  • Giving tutorials in the postgraduate Digital Signal Processing course of the University of Southampton.
September 2013 - June 2015
University of Southampton
Position
  • Mentor in the MSc Wireless Communications
Description
  • Working with a group of 10 students on a weekly basis for solving queries on the courses of the MSc Wireless Communications, while providing tutorials on various telecommunication topics.
Education
September 2011 - June 2015
University of Southampton
Field of study
  • Wireless Communications
September 2010 - September 2011
University of Southampton
Field of study
  • Wireless Communications
September 2005 - July 2010
National Technical University of Athens
Field of study
  • Electrical & Computer Engineering

Publications

Publications (50)
Article
Full-text available
Soft-decision-aided Multi-Set Steered Space-Time Shift Keying (MS-SSTSK) intrinsically amalgamated with channel coding is proposed in order to attain near capacity-performance. Multi-Set Space-Time Shift Keying (MS-STSK) is a Multipleinput Multiple-output (MIMO) scheme, which combines the concepts of Spatial Modulation (SM) and STSK for the sake of...
Article
Full-text available
Open Access Journal. Full Version: http://www.nature.com/articles/srep38095 When quantum computing becomes a wide-spread commercial reality, Quantum Search Algorithms (QSA) and especially Grover’s QSA will inevitably be one of their main applications, constituting their cornerstone. Most of the literature assumes that the quantum circuits are free...
Article
Full-text available
With the proliferation of smart-phones and tablet PCs the data rates of wireless communications have been soaring. Hence, the need for power-efficient communications relying on low-complexity multiple-stream detectors has become more pressing than ever. As a remedy, in this paper we design lowcomplexity soft-input soft-output Quantum-assisted Multi...
Article
Full-text available
With the research on implementing a universal quantum computer being under the technological spotlight, new possibilities appear for their employment in wireless communications systems for reducing their complexity and improving their performance. In this treatise, we consider the downlink of a rank-deficient, multi-user system and we propose the d...
Article
Full-text available
The employment of quantum error correction codes (QECCs) within quantum computers potentially offers a reliability improvement for both quantum computation and communications tasks. However, incorporating quantum gates for performing error correction potentially introduces more sources of quantum decoherence into the quantum computers. In this scen...
Preprint
Full-text available
The employment of quantum error correction codes (QECCs) within quantum computers potentially offers a reliability improvement for both quantum computation and communications tasks. However, incorporating quantum gates for performing error correction potentially introduces more sources of quantum decoherence into the quantum computers. In this scen...
Article
Full-text available
In this letter, we conceive a multi-layered coding scheme for the recently proposed Layered Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (LACO-OFDM) system, which exploits its layered structure for protecting the information bits transmitted in the base layer. Explicitly, we intrinsically integrate error correction with...
Article
Full-text available
An iterative initial sequence acquisition technique is proposed for the Pseudo-Noise (PN) signal derived from a pair of m-sequences used for generating the concatenated sequence, which relies on Soft-In-Soft-Out (SISO) detection to improve the acquisition performance. This Recursive Soft Sequential Estimation (RSSE) technique has a linearly increas...
Article
Full-text available
Faster, ultra-reliable, low-power and secure communications has always been high on the wireless evolutionary agenda. However, the appetite for faster, more reliable, greener and more secure communications continues to grow. The state-of-the-art methods conceived for achieving the performance targets of the associated processes may be accompanied b...
Article
Full-text available
In this treatise, first of all, we conceive a generic Multiple-Symbol Differential Sphere Detection (MSDSD) solution for both single- and multiple-antenna based noncoherent schemes in both uncoded and coded scenarios, where the high-mobility aeronautical Ricean fading features are taken into account. The bespoke design is the first MSDSD solution i...
Article
Full-text available
The provision of high-speed Internet access in aircraft is mainly supported by satellite links at the time of writing, aided by links between the aircraft and the ground stations. It is anticipated that Air-To-Ground (A2G) communications between en-route aircraft and the ground stations will have a major role in providing the required Quality of Se...
Data
The supplementary presentation for the article entitled "Duality of Quantum and Classical Error Correction Codes: Design Principles & Examples."
Article
Full-text available
Quantum Error Correction Codes (QECCs) can be constructed from the known classical coding paradigm by exploiting the inherent isomorphism between the classical and quantum regimes, while also addressing the challenges imposed by the strange laws of quantum physics. In this spirit, this paper provides deep insights into the duality of quantum and cl...
Article
Full-text available
Pareto optimality is capable of striking the optimal trade-off amongst the diverse conflicting QoS requirements of routing in wireless multihop networks. However, this comes at the cost of increased complexity owing to searching through the extended multi-objective search-space. We will demonstrate that the powerful quantum-assisted dynamic program...
Article
Full-text available
Inspired by the success of classical turbo codes, quantum turbo codes (QTCs) have also been conceived for near-hashing-bound transmission of quantum information over memoryless quantum channels. However, in real physical situations, the memoryless channel assumption may not be well justified since the channel often exhibits memory of previous error...
Article
A delay of less than one millisecond is required by low-latency 5G wireless communication systems for supporting the ‘tactile’ Internet. Hence, conventional initial synchronisation cannot be readily employed because of its potentially excessive delay. In this paper, an EXtrinsic Information Transfer (EXIT) Chart assisted approach is used for the co...
Article
Full-text available
We conceive and investigate the family of classical topological error correction codes (TECCs), which have the bits of a codeword arranged in a lattice structure. We then present the classical-to-quantum isomorphism to pave the way for constructing their quantum dual pairs, namely the quantum topological error correction codes (QTECCs). Finally, we...
Article
Full-text available
An ideal Visible Light Communication (VLC) system should facilitate reliable data transmission at high throughputs, while also providing flicker-free illumination at the user-defined dimming level. In this spirit, we conceive a unary code aided dimming scheme for On-Off Keying (OOK) modulated VLC systems. The proposed unary-coded scheme facilitates...
Article
Full-text available
Flexible modulation schemes and smart Multiple- Input Multiple-Output (MIMO) techniques, as well as lowcomplexity detectors and preprocessors may become essential for efficiently balancing the Bit Error Ratio (BER) performance, throughput and complexity trade-off for various application scenarios. Millimeter-Wave systems have a high available bandw...
Article
Full-text available
With the proliferation of mm-Wave systems and Visible Light Communications (VLC), indoor localization may find multiple applications. When high localization accuracy is required and triangulation is not possible due to the infrastracture and scenario limitations, the computational complexity of searching on a virtual grid may become excessive. In t...
Article
Full-text available
Large-scale Quantum Network Coding (LQNC) is conceived for distributing entangled qubits over large-scale quantum communication networks supporting both teleportation and Quantum Key Distribution (QKD). More specifically, the LQNC is characterised by detailing the encoding and decoding process for distributing entangled pairs of qubits to M pairs o...
Article
Moore’s law is expected to lead to the gates of the quantum world in 2017. Therefore, the emerging quantum computing research is expected to give rise to novel quantum search algorithms, which may replace the currently used classical ones in wireless communications, leading to performance improvements and complexity reduction. In this treatise we d...
Article
Full-text available
The trade-off between the quantum coding rate and the associated error correction capability is characterized by the quantum coding bounds. The unique solution for this trade-off does not exist, but the corresponding lower and the upper bounds can be found in the literature. In this treatise, we survey the existing quantum coding bounds and provide...
Article
Full-text available
Realistic public wireless channels and Quantum Key Distribution (QKD) systems are amalgamated. Explicitly, we conceive Network Coding aided Cooperative Quantum Key Distribution over Free Space Optical (NC-CQKD-FSO) systems for improving the Bit Error Ratio (BER) and either the key rate or the reliable operational distance. Our system has provided a...
Article
Full-text available
In this paper, we conceive novel symbol-based Color- Shift Keying (CSK)-aided concatenated coding schemes, which provide attractive performance gains over the comparable bitbased systems. Quantitatively, our 4CSK-aided and 16CSK-aided symbol-based concatenated systems require 0.8 dB and 0.45 dB lower SNR than the equivalent bit-based schemes. In te...
Article
Full-text available
Wireless Multihop Networks (WMHNs) have to strike a trade-off among diverse and often conflicting Quality-of-Service (QoS) requirements. The resultant solutions may be included by the Pareto Front under the concept of Pareto Optimality. However, the problem of finding all the Pareto-optimal routes in WMHNs is classified as NP-hard, since the number...
Data
The supplementary information for the article entitled "Quantum Error Correction Protects Quantum Search Algorithms Against Decoherence."
Article
The widespread use of mobile networking devices, such as smart phones and tablets, has substantially increased the number of nodes in the the operational networks. These devices often suffer from the lack of power and bandwidth. Hence, we have to optimize their message-routing for the sake of maximizing their capabilities. However, the optimal rout...
Article
Full-text available
In this letter, we aim for maximizing the throughput of a VLC system. Explicitly, we conceive a Soft-In Soft-Out (SISO) decoder providing soft feedback for the classic Run Length Limited (RLL) codes, hence facilitating iterative decoding for exchanging valuable extrinsic information between the RLL and the error correction modules of a VLC system....
Article
Inspired by the astounding performance of the unity rate code (URC) aided classical coding and detection schemes, we conceive a quantum URC (QURC) for assisting the design of concatenated quantum codes. Unfortunately, a QURC cannot be simultaneously recursive as well as non-catastrophic. However, we demonstrate that, despite being non-recursive, ou...
Article
Full-text available
Joint Channel Estimation (CE) and Multi-User Detection (MUD) has become a crucial part of iterative receivers. In this paper we propose a Quantum-assisted Repeated Weighted Boosting Search (QRWBS) algorithm for CE and we employ it in the uplink of MIMO-OFDM systems, in conjunction with the Maximum A posteriori Probability (MAP) MUD and a nearoptima...
Article
Full-text available
In this contribution, the Hashing bound of Entanglement Assisted Quantum Channels (EAQC) is investigated in the context of quantum devices built from a range of popular materials, such as trapped ion and relying on solid state Nuclear Magnetic Resonance (NMR), which can be modelled as a so-called asymmetric channel. Then, Quantum Error Correction C...
Article
Full-text available
Joint Channel Estimation (CE) and Multi-User Detection (MUD) has become a crucial part of iterative receivers. In this paper we propose a Quantum-assisted Repeated Weighted Boosting Search (QRWBS) algorithm for CE and we employ it in the uplink of MIMO-OFDM systems, in conjunction with the Maximum A posteriori Probability (MAP) MUD and a near-optim...
Article
Full-text available
Quantum Turbo Codes (QTCs) are known to operate close to the achievable Hashing bound. However, the sequential nature of the conventional quantum turbo decoding algorithm imposes a high decoding latency, which increases linearly with the frame length. This posses a potential threat to quantum systems having short coherence times. In this context, w...
Article
Full-text available
The near-capacity performance of classical low-density parity check (LDPC) codes and their efficient iterative decoding makes quantum LDPC (QLPDC) codes a promising candidate for quantum error correction. In this paper, we present a comprehensive survey of QLDPC codes from the perspective of code design as well as in terms of their decoding algorit...
Article
Full-text available
Classical row-circulant quasi-cyclic (QC) low-density parity check (LDPC) matrices are known to generate efficient high-rate short and moderate-length QC-LDPC codes, while the comparable random structures exhibit numerous short cycles of length-4. Therefore, we conceive a general formalism for constructing nondual-containing Calderbank–Shor–Steane...
Article
Full-text available
Routing in Wireless Multihop Networks (WMHNs) relies on a delicate balance of diverse and often conflicting parameters, when aiming for maximizing the WMHN performance. Classified as a Non-deterministic Polynomial-time hard problem (NP-hard), routing in WMHNs requires sophisticated methods. As a benefit of observing numerous variables in parallel,...
Article
Full-text available
In large-dimensional wireless systems, such as Cooperative Multi-cell Processing (CoMP), mm-Wave and massive MIMO systems, or cells having a high user density, such as airports, train stations and metropolitan areas, sufficiently accurate estimation of all the channel gains is required for performing coherent detection. Therefore they may impose an...
Article
Full-text available
Powerful quantum error correction codes (QECCs) are required for stabilizing and protecting fragile qubits against the undesirable effects of quantum decoherence. Similar to classical codes, hashing bound approaching QECCs may be designed by exploiting a concatenated code structure, which invokes iterative decoding. Therefore, in this paper, we pro...
Thesis
The high complexity of numerous optimal classical communication schemes, such as the Maximum Likelihood (ML) and Maximum A posteriori Probability (MAP) Multi-User Detector (MUD) designed for coherent detection or the ML and MAP Multiple-Symbol Differential Detectors (MSDD) conceived for non-coherent receivers often prevents their practical implemen...
Conference Paper
Full-text available
The potentially excessive complexity of the Maximum Likelihood Multi-User Detector (ML MUD) in large-scale Spatial Division Multiple Access (SDMA) systems dictates the employment of low-complexity sub-optimal MUDs in the context of conventional systems. However, this limitation was circumvented by the recently proposed Durr-Høyer Algorithm (DHA)-ai...
Article
Full-text available
Self-Organizing Networks (SONs) act autonomously for the sake of achieving the best possible performance. The attainable routing depends on a delicate balance of diverse and often conflicting Quality-of-Service (QoS) requirements. Finding the optimal solution typically becomes an NP-hard problem, as the network size increases in terms of the number...
Article
Full-text available
Low-complexity suboptimal multiuser detectors (MUDs) are widely used in multiple access communication systems for separating users, since the computational complexity of the maximum likelihood (ML) detector is potentially excessive for practical implementation. Quantum computing may be invoked in the detection procedure, by exploiting its inherent...
Conference Paper
The past, the current state-of-the-art and the future of wireless communications was briefly summarized in [1], [2]. Against this background, this presentation briefly reports on some of the recent quantum-aided design examples in the field of wireless communications. The high complexity of numerous optimal classic communication schemes, such as th...
Article
Full-text available
The high complexity of numerous optimal classic communication schemes, such as the maximum likelihood (ML) multiuser detector (MUD), often prevents their practical implementation. In this paper, we present an extensive review and tutorial on quantum search algorithms (QSA) and their potential applications, and we employ a QSA that finds the minimum...

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Projects

Projects (6)
Project
Our research goal is to advance the state-of-the-art in this emerging field, including drones and planes in the face of their high Doppler frequency and unique propagation scenarios.
Project
To provide input for industry and academia in enriching the NOMA toolbox.