Cooperative Linear Combining on Quantize-Forward Relay Channel With [Formula Omitted]-Ary Phase Shift Keying

This work considers quantize–forward (QF) relay channels with [Formula Omitted]-ary phase shift keying at the source and [Formula Omitted]-bit uniform phase quantization at the relay. A cooperative linear combining (CLC) detection which linearly combines the received signals at the destination is pr...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2022-01, Vol.71 (5), p.5645
Main Author: Jin, Xianglan
Format: Article
Language:English
Subjects:
Channels
Complexity
Measurement
Phase shift keying
Relay
Service introduction
Signal to noise ratio
Online Access:Get full text
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Summary:This work considers quantize–forward (QF) relay channels with [Formula Omitted]-ary phase shift keying at the source and [Formula Omitted]-bit uniform phase quantization at the relay. A cooperative linear combining (CLC) detection which linearly combines the received signals at the destination is proposed in the QF relay channel by deriving an equivalent signal-to-noise ratio for the source-relay-destination link. Furthermore, the proposed detection is simplified by approximating [Formula Omitted] function in two directions: small [Formula Omitted] and large [Formula Omitted]. The CLC detection and its simplified version are also extended to multi-relay channels. Simulation results verify that the CLC and simplified CLC detections achieve reasonable performance with less complexity than the maximum-likelihood detection. It demonstrates that applying [Formula Omitted]-bit uniform phase quantization at the relay and the simplified CLC detection at the destination can be an appropriate choice in terms of performance, complexity, and memory.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2022.3155464