Moray Rumney

Moray Rumney
Keysight Technologies · Strategic Business Development

About

47
Publications
6,042
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
591
Citations
Citations since 2016
25 Research Items
393 Citations
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
Introduction

Publications

Publications (47)
Chapter
Ever since 4G, the role of MIMO antennas has become increasingly important in the increased sophistication of mobile communication systems. This has been and continues to be the subject of endless research, some of which has been incorporated into standards. However, the theoretical advantages of advanced antenna techniques are often just that, the...
Article
Full-text available
The next generation communication system, typically referred to as the fifth generation (5G), is currently under global intensive research and development in industry, academia and governmental organisations. The new 5G cellular systems are envisioned to achieve better performance, e.g. higher data rate, better energy efficiency, and higher reliabi...
Conference Paper
Ever since millimetre-wave (mmWave) frequencies were considered as one of the key enabling technologies for fifth generation (5G) mobile communications, due to the availability of spectrum to achieve high data rates, increasing attention has been drawn towards how to evaluate the radiated performance of future 5G mmWave devices. Existing over-the-a...
Research Proposal
Full-text available
Specific topics of interest include, but are not limited to: • Novel conducted and over-the-air measurement testing setups • Anechoic chamber and reverberation chamber based testing setup for 5G antenna testing • Production test system for 5G mmWave base station and mobile terminal • Massive MIMO antenna array diagnosis and calibration • Over-the-a...
Poster
Full-text available
Sub 6GHz wireless User Equipment is carried out using cabled disconnecting the antenna. Additionally SISO and MIMO over the air (OTA) test methods have been developed to measure antenna efficiency and the impact of the channel spatial correlated of the data streams. The 5G standard will utilise the large available bandwidth at millimetre wave frequ...
Article
Full-text available
With the severe spectrum congestion of sub-6GHz cellular systems, large-scale antenna systems in the millimeter-wave (mmWave) bands can potentially meet the high data rate envisioned for fifth generation (5G) communications. Performance evaluation of antenna systems is an essential step in the product design and development stage. However, conventi...
Article
This paper presents the analysis and characterization of the surface scattering process for both specular and diffused components. The study is focused on the investigation of various building materials each having a different roughness, at a central frequency of 60GHz. Very large signal strength variations in first order scattered components is ob...
Article
The antenna is one of the most important components of mobile stations, since antenna design has a significant effect on mobile station performance and the end user's experience. The industry therefore needs effective test methods to evaluate the mobile station's overall radiated end-to-end performance. Traditional receiver testing used cabled sign...
Conference Paper
This paper discusses recent developments with the two-stage MIMO OTA test method. It first introduces the concept of the two-stage method which is based on a first stage of antenna pattern measurement followed by a second stage of throughput measurement using a signal generated by convolving the device antenna pattern with the desired spatial chann...
Conference Paper
The emergence of the fifth generation of mobile communications with its emphasis on massive MIMO and channel bandwidths over 1 GHz at mmWave frequencies is set to change everything we used to know about the design, validation and operation of cellular systems. This paper looks at the technical implications of the validation of cellular systems, and...
Chapter
This chapter covers user equipment (UE) and evolved Node B (eNB) conformance testing. It explains the role of certification bodies such as the global certification forum (GCF) and PCS type certification review board (PTCRB) in UE certification and in network operator acceptance testing, which-although not formally part of the conformance testing re...
Chapter
This chapter covers the radio aspects of long term evolution (LTE), starting with an overview of the radio frequency (RF) specifications. The chapter highlights those aspects of the LTE RF requirements that will be new compared to universal mobile telephone system (UMTS). These include issues relating to LTE's support of multiple bands and channel...
Chapter
This chapter provides an introduction to LTE (E-UTRA) physical layer design. The physical layer covers the downlink transmission from the evolved node B (eNB) base transceiver station to the user equipment (UE), and the uplink transmission from the UE to eNB. 3GPP has selected a new OFDMA modulation scheme for the physical layer. The chapter descri...
Chapter
This chapter describes the development of the DigRF standard for interconnecting baseband and radio frequency (RF) subsystems within the user equipment (UE). It talks about design and measurement challenges of LTE transmitters and receivers. The chapter presents the open and closed-loop behaviors of the physical layer using the demodulation capabil...
Article
This introductory chapter of LTE and the Evolution to 4G Wireless - Design and Measurement Challenges, Second Edition: Design and Measurement Challenges provides an overview of the long term evolution (LTE) system, and describes the evolution of the 3GPP UMTS specifications towards LTE. High level requirements for LTE/System Architecture Evolution...
Chapter
The baseline LTE radio access network (RAN) and evolved packet core (EPC) network were defined in 3GPP Release 8, which was functionally frozen in December 2008. This chapter summarizes important additions to the LTE specifications. These include the most significant changes to the 3GPP standard, which occurred in Release 10 for the support of LTE-...
Conference Paper
MIMO technology got lots of attentions in wireless communications because it can increase the system capacity significantly, especially in fading environment. Some broadcasting systems, like DVB-T2, already adopted MIMO technology, while some other systems are considering add MIMO in their enhanced version. Research results show that field performa...
Article
Full-text available
Multiple-input multiple-output (MIMO) over-the-air (OTA) measurements and simulations for network and terminal performance evaluation and prediction have become very important research topics in recent years. Research into MIMO OTA for standardisation purposes has been ongoing in The Wireless Association (CTIA), the Third Generation Partnership Pro...
Article
Full-text available
With MIMO technology being adopted by the wireless communication standards LTE and HSPA+, MIMO OTA research has attracted wide interest from both industry and academia. Parallel studies are underway in COST2100, CTIA, and 3GPP RAN WG4. The major test challenge for MIMO OTA is how to create a repeatable scenario which accurately reflects the MIMO an...
Conference Paper
Self-interference and self-noise are key performance factors in cellular devices. Cellular standards such as GSM, UMTS and LTE include requirements for the measurement and reporting of the power and quality of received downlink signals. The purpose of these measurements is so the UE can report radio conditions to the network which are then used to...
Chapter
This chapter describes the impact of the Long Term Evolution (LTE) physical layer radio requirements on the implementation complexities of an LTE transceiver, compared to the well-known Universal Mobile Telecommunications System (UMTS) system. It introduces the relevant spectrum bands for LTE. Radio requirements for the transmitter and receiver are...
Conference Paper
Conformance tests for SISO OTA were introduced in recent years but so far nothing exists for the newly introduced MIMO devices. Unlike SISO systems where multipath fading is something to be overcome, MIMO takes advantage of fading to identify and use orthogonal communication channels to enable simultaneous transmission of multiple streams of data....
Article
The standardization efforts for multiple input/multiple output (MIMO) over the air (OTA) testing are discussed. The desired figure of merit (FOM) for MIMO OTA is end-to-end data throughput in realistic conditions, which provides a direct measure of quality of experience (QoE). The test methods for MIMO OTA can be grouped into three categories that...
Article
Telecommunication companies need to adopt innovative strategies to handle high peak power in long-term evolution (LTE) transmitters. Steps can be taken to reduce the signal peaks to extend the useful operating range of the power amplifier. Two complementary methods are used for this purpose, such as crest factor reduction (CFR) that attempts to lim...
Article
Multiple-antenna techniques are a large part of improved performance in LTE wireless systems, but they must be properly understood in order to be properly tested.
Article
The development of a method to predict the spreading codes of code spurs, generated by transmission nonlinearities, is discussed. The capability to predict the spreading codes offers benefits in code division multiple access (CDMA) system operation. Nonlinearities, which are downlink signal compression or deliberate signal clipping, create code spu...

Network

Cited By

Projects

Projects (2)
Archived project
Definition of test methods to cover RF, RRM and demodulation performance requirements for the 5G new radio (NR).