Yi Wang

University of Bedfordshire · Business and Management Research Institute

Mobile edge computing (MEC) is a promising technique to support the emerging delay-sensitive and compute-intensive applications for user equipment (UE) by means of computation offloading. However, designing a computation offloading algorithm for the MEC network to meet the restrictive requirements towards system latency and energy consumption remai...

The great demand for mobile blockchain computing power is often unsatisfied by terminal devices, so computational tasks are offloaded to edge computing servers. This paper proposes a new mobile communication blockchain assumption, forms a computing power alliance (CPA), and builds a smart contract‐based security model. First, mining difficulty comp...

With the rapid development of the Internet of Things, sparse code multiple access (SCMA), which aims to promote spectrum efficiency and support massive connectivity in the future beyond fifth- and sixth-generation massive machine-type communication (mMTC) scenarios, has been widely investigated. To improve the bit error rate (BER) performance of th...

Low-power memories typically operate in the subthreshold region of the device; however, as the supply voltage continues to decrease, the impact of leakage current on SRAM stability becomes more significant. The traditional method of measuring static noise tolerance only considers the effect of voltage, and the measurement results are not accurate e...

This paper proposes a low-voltage, low-cost multiple-time-programmable nonvolatile memory (MTP NVM) based on a standard CMOS 0.13 μm process for UHF RFID chip applications. The design of the differential structure cell using the tunneling effect reduces the read and write voltage. The read and write simulation test results show that the read and wr...

In this paper, we present a new digital baseband processor for UHF tags. It is a low-power and low-voltage digital circuit and adopts the Chinese military standard protocol GJB7377.1. The processor receives data or commands from the RF front-end and carries out various functions, such as receiving and writing data to memory, reading and sending mem...

Massive machine type communication (mMTC) serves an irreplaceable role in the development process of the Internet of Things (IoT). Because of its characteristics of massive connection and sporadic transmission, compressed sensing (CS) has been applied in joint user activity and data detection in the uplink grant-free non-orthogonal multiple access...

Compared with traditional multiple-input-multiple-output (MIMO) systems, the number of base station (BS) antennas increased in massive MIMO systems. However, due to the huge number of antennas, linear precoding schemes are able to achieve the near-optimal performance. Conventional linear precoding schemes such as regularized zero forcing (RZF) prec...

The almost blank subframe (ABS) has been studied in 3GPP as a way to mitigate downlink interference experienced by cell range expansion (CRE) user equipments (UEs). However, the throughput of CRE UEs highly depends on the ratios of ABS which are statically configured in many situations. The coordinated multi-point (CoMP) is one of the key solutions...

Localization is essential in the field of wireless sensor networks (WSNs). Compared to other non-interactive localization algorithms, the weighted centroid localization scheme only uses the information of the received signal strength (RSS), which makes it simple to implement and robust to variation in the propagation environment. In this paper, we...

Localization algorithm is an important and challenging topic in today's wireless sensor networks (WSNs). In order to improve the localization accuracy, a weighted centroid localization algorithm based on least square to predict the location of any sensor in a WSNs is proposed in this paper. The proposed algorithm proposes a Least-Square-based weigh...

Min-Max localization algorithm is usually used by wireless sensor nodes because of the reason that it considers few conditions and have a coarse localization which can determine a blind node within a certain range. In this paper, we propose improved Extended Min-Max (improved E-Min-Max) algorithm for localization in wireless sensor networks (WSNs)....

CoMP has been adopted in 3GPP LTE-Advanced to improve the coverage of high data rates. And the downlink transmission mode, JP or CB, should be selected for base station cooperation when the backhaul capacity is limited. In this paper, considering different numbers of users, we propose an adaptive transmission mode selection. To mitigate the perform...