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Adaptive turbo trellis coded modulation aided distributed space-time trellis coding for cooperative communications

Adaptive turbo trellis coded modulation aided distributed space-time trellis coding for cooperative communications
Adaptive turbo trellis coded modulation aided distributed space-time trellis coding for cooperative communications
In this contribution, we propose an adaptive Turbo Trellis Coded Modulation (TTCM) aided Distributed Space-Time Trellis Coding (STTC) scheme for cooperative communication over quasi-static Rayleigh fading channels. An adaptive TTCM (ATTCM) scheme is employed by the source node during the first transmission period for reliably conveying the source bits to N number of relay nodes by appropriately adjusting the code-rate and modulation mode according to the near-instantaneous channel condition. The TTCM switching thresholds are chosen to ensure that the Bit Error Ratio (BER) at each relay node becomes lower than 10-6 in order to minimise the potential error propagation imposed by the relay nodes. During the second transmission period, an N -antenna assisted Distributed STTC (DSTTC) scheme is created with the aid of the aforementioned N single-antenna relay nodes. More specifically, the N relay nodes are utilised to form STTC codewords based on the re-encoded TTCM symbols of the relays for transmission to the destination node. At the destination node, iterative extrinsic information exchange is performed between the STTC and TTCM decoders for recovering the original source bits. It is shown that the proposed ATTCM-DSTTC scheme requires 12 dBs less transmission power in comparison to a standard TTCM scheme when aiming for a frame error ratio of 10-3.
978-1-4244-2519-8
Ng, Soon
e19a63b0-0f12-4591-ab5f-554820d5f78c
Qian, Chuyi
2a3ac6a9-cdd1-470d-983a-1061c1b7b724
Liang, Dandan
7ec17ba1-8959-4ee0-8f58-2e51c646ae23
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Ng, Soon
e19a63b0-0f12-4591-ab5f-554820d5f78c
Qian, Chuyi
2a3ac6a9-cdd1-470d-983a-1061c1b7b724
Liang, Dandan
7ec17ba1-8959-4ee0-8f58-2e51c646ae23
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Ng, Soon, Qian, Chuyi, Liang, Dandan and Hanzo, Lajos (2010) Adaptive turbo trellis coded modulation aided distributed space-time trellis coding for cooperative communications. VTC2010-Spring, Taipei, Taiwan. 15 - 18 May 2010. 5 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

In this contribution, we propose an adaptive Turbo Trellis Coded Modulation (TTCM) aided Distributed Space-Time Trellis Coding (STTC) scheme for cooperative communication over quasi-static Rayleigh fading channels. An adaptive TTCM (ATTCM) scheme is employed by the source node during the first transmission period for reliably conveying the source bits to N number of relay nodes by appropriately adjusting the code-rate and modulation mode according to the near-instantaneous channel condition. The TTCM switching thresholds are chosen to ensure that the Bit Error Ratio (BER) at each relay node becomes lower than 10-6 in order to minimise the potential error propagation imposed by the relay nodes. During the second transmission period, an N -antenna assisted Distributed STTC (DSTTC) scheme is created with the aid of the aforementioned N single-antenna relay nodes. More specifically, the N relay nodes are utilised to form STTC codewords based on the re-encoded TTCM symbols of the relays for transmission to the destination node. At the destination node, iterative extrinsic information exchange is performed between the STTC and TTCM decoders for recovering the original source bits. It is shown that the proposed ATTCM-DSTTC scheme requires 12 dBs less transmission power in comparison to a standard TTCM scheme when aiming for a frame error ratio of 10-3.

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Published date: May 2010
Venue - Dates: VTC2010-Spring, Taipei, Taiwan, 2010-05-15 - 2010-05-18
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 271167
URI: http://eprints.soton.ac.uk/id/eprint/271167
ISBN: 978-1-4244-2519-8
PURE UUID: d69685fd-5107-422c-bdaf-ceeed0e48db3
ORCID for Soon Ng: ORCID iD orcid.org/0000-0002-0930-7194
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 25 May 2010 20:45
Last modified: 18 Feb 2021 16:50

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Contributors

Author: Soon Ng ORCID iD
Author: Chuyi Qian
Author: Dandan Liang
Author: Lajos Hanzo ORCID iD

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