IET Communications

In this study, the authors explore a generalised scheme for the synchronous code division multiple access (CDMA). In this scheme, unlike the standard CDMA systems, each user has different codewords for communicating different messages. Two main problems ...

Based on the asymptotic analysis in spatially correlated Rician fading channel, the precoders for space‐time block‐coded multiple‐input multiple‐output system at high and low signal‐to‐noise ratios (SNRs) are, respectively, designed to minimise the system ...

The authors consider a linear relaying communication system using multiple antennas at a source, relay and destination. They maximise the end‐to‐end signal‐to‐noise‐ratio (SNR) to find the relay transformation (RT) and the source transmit covariance (STC) ...

Recent studies have revealed that spectrum congestion is due to the inefficient usage of spectrum against the availability. Cognitive radio is viewed as an approach for improving the utilisation of radio spectrum. The spectrally encoded (spread‐time) code‐...

An efficient method is proposed to estimate the carrier frequency offsets (CFOs) in the orthogonal frequency‐division multiple access (OFDMA) uplink. The conventional alternating projection method is accelerated by utilising the inherited properties of ...

Channel shortening is a necessary equalisation for mitigation of inter‐symbol and inter‐carrier interferences in multicarrier transceivers. Its purpose is to reduce the length of the impulse response of the channel. In this study, the authors present a ...

Optimal iterative log‐MAP decoding of turbo codes requires accurate knowledge of the operating signal‐to‐noise ratio (SNR). However, the SNR information, available at practical decoders for bit‐interleaved coded modulation systems, such as the third ...

This study carries out the first‐ever investigation of the analysis of a cooperative decode‐and‐forward (DF) relay network with chaos shift keying (CSK) modulation. The performance analysis of DF‐CSK in this study takes into account the dynamical nature ...

In this study, the authors evaluate the outage probability performance of an amplify‐and‐forward cooperative relay network where the relays are equipped with cognitive radios. When the number of available relays is more than four the authors use the ...

With the development of the high‐speed communication channel or high‐capacity storage device, the intersymbol interference (ISI) occurs more frequently in the condensed data. The traditional Bahl – Cocke – Jelineu – Raviv (BCJR) method is capable of ...

There are two important factors which impact the performance of phase‐based frequency estimation algorithms remarkably: the approximations of noise phase model and imperfections in phase unwrapping process. Support vector regression (SVR) exits excellent ...

Power amplifiers are one of the costly devices in wireless communication systems and exhibit non‐linearity. The problem of non‐linearity in the power amplifier categorises in two disturbance impacts, output distortion and in‐band distortion which lead to ...