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Quasi-synchronous cooperative networks: a practical cooperative transmission protocol

Quasi-synchronous cooperative networks: a practical cooperative transmission protocol
Quasi-synchronous cooperative networks: a practical cooperative transmission protocol
In this article, we propose a cooperative space-time coding (STC) protocol, amalgamating the concepts of asynchronous cooperation, noncoherent detection, as well as distributed turbo coding (DTC), where neither symbol-level time synchronization nor channel-state information (CSI) estimation is required at any of the cooperating nodes, while attaining high performance even at low signal-to-noise ratios (SNRs). More specifically assuming the system configuration of a single source node, multiple relay nodes, and a single destination node, each having a single antenna element (AE)a practical cooperative differential space-time spreading (CDSTS) scheme is designed using interference rejection spreading codes, to eliminate the effect of synchronization errors between the relay nodes without the assistance of channel estimation or equalization. Furthermore, a set of space–time codewords are constructed based on differential linear dispersion codes (DLDCs), which allows our CDSTS system to support an arbitrary number of relay nodes operating at a high transmission rate because of its flexible design. Rather than using conventional single-relay-assisted DTCs, novel multirelay-assisted DTCs and a three-stage iteratively decoded destination receiver structure are developed for attaining a high-transmit diversity order. In our simulations, the system parameters are designed using extrinsic information transfer (EXIT) chart analysis, followed by the characterization of the achievable bit error rate (BER) performance for
various synchronization delay values, as well as for various diversity-multiplexing relationships in frequency-selective fast and/or quasi-static Rayleigh fading environments.
1556-6072
66-76
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Kong, Lingkun
7d1a9e19-a1cc-4066-8d98-e9e29c2a0177
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Kong, Lingkun
7d1a9e19-a1cc-4066-8d98-e9e29c2a0177
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Sugiura, Shinya, Ng, Soon Xin, Kong, Lingkun, Chen, Sheng and Hanzo, Lajos (2012) Quasi-synchronous cooperative networks: a practical cooperative transmission protocol. IEEE Vehicular Technology Magazine, 7 (4), Winter Issue, 66-76. (doi:10.1109/MVT.2012.2193493).

Record type: Article

Abstract

In this article, we propose a cooperative space-time coding (STC) protocol, amalgamating the concepts of asynchronous cooperation, noncoherent detection, as well as distributed turbo coding (DTC), where neither symbol-level time synchronization nor channel-state information (CSI) estimation is required at any of the cooperating nodes, while attaining high performance even at low signal-to-noise ratios (SNRs). More specifically assuming the system configuration of a single source node, multiple relay nodes, and a single destination node, each having a single antenna element (AE)a practical cooperative differential space-time spreading (CDSTS) scheme is designed using interference rejection spreading codes, to eliminate the effect of synchronization errors between the relay nodes without the assistance of channel estimation or equalization. Furthermore, a set of space–time codewords are constructed based on differential linear dispersion codes (DLDCs), which allows our CDSTS system to support an arbitrary number of relay nodes operating at a high transmission rate because of its flexible design. Rather than using conventional single-relay-assisted DTCs, novel multirelay-assisted DTCs and a three-stage iteratively decoded destination receiver structure are developed for attaining a high-transmit diversity order. In our simulations, the system parameters are designed using extrinsic information transfer (EXIT) chart analysis, followed by the characterization of the achievable bit error rate (BER) performance for
various synchronization delay values, as well as for various diversity-multiplexing relationships in frequency-selective fast and/or quasi-static Rayleigh fading environments.

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Published date: 10 December 2012
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 349780
URI: http://eprints.soton.ac.uk/id/eprint/349780
ISSN: 1556-6072
PURE UUID: fb87b789-e506-4c66-9e67-c1b4815e0c24
ORCID for Soon Xin Ng: ORCID iD orcid.org/0000-0002-0930-7194
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 11 Mar 2013 11:54
Last modified: 18 Feb 2021 16:50

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