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Turbo-coded CDMA-based two-way relaying

Turbo-coded CDMA-based two-way relaying
Turbo-coded CDMA-based two-way relaying
In this contribution, we have studied the performance of a Turbo-Coded (TC) Code Division Multiple Access (CDMA) based two-way relaying scheme. More explicitly, we employ a seven-user CDMA model, where two of the CDMA users are communicating with each other with the aid of an additional relay node, while the other five CDMA users are interferers. More explicitly, two CDMA users exchange their information frames within two timeslots. Note that the conventional one-way relaying system can only transmit one information frame within two timeslots because the relay node is half-duplex, where it cannot listen and transmit simultaneously. We found that our proposed TC-CDMA two-way relaying scheme is capable of attaining over 4 dB of SNR gain at a Bit Error Rate (BER) of 10-6 when compared to a conventional non-cooperative TC-CDMA system. We also found that there is about two dB of SNR loss at a BER of 10-6, due to the error propagation from the relay node. The proposed scheme exploits the benefits of TC and CDMA schemes in order to assist the two-way relaying system to operate with a reduced transmit power. The reduction of the transmit power can also be exploited for increasing the coverage area of a cellular cell. Hence, the TC-CDMA two-way relaying scheme is a good candidate for future generation mobile systems
287-291
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Liao, Sha Sha
db50427c-a216-48c6-99df-b4fd1b6b6b31
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Liao, Sha Sha
db50427c-a216-48c6-99df-b4fd1b6b6b31

Ng, Soon Xin and Liao, Sha Sha (2012) Turbo-coded CDMA-based two-way relaying. Progress In Electromagnetics Research Symposium, Kuala Lumpur, Malaysia. 26 - 29 Mar 2012. pp. 287-291 .

Record type: Conference or Workshop Item (Paper)

Abstract

In this contribution, we have studied the performance of a Turbo-Coded (TC) Code Division Multiple Access (CDMA) based two-way relaying scheme. More explicitly, we employ a seven-user CDMA model, where two of the CDMA users are communicating with each other with the aid of an additional relay node, while the other five CDMA users are interferers. More explicitly, two CDMA users exchange their information frames within two timeslots. Note that the conventional one-way relaying system can only transmit one information frame within two timeslots because the relay node is half-duplex, where it cannot listen and transmit simultaneously. We found that our proposed TC-CDMA two-way relaying scheme is capable of attaining over 4 dB of SNR gain at a Bit Error Rate (BER) of 10-6 when compared to a conventional non-cooperative TC-CDMA system. We also found that there is about two dB of SNR loss at a BER of 10-6, due to the error propagation from the relay node. The proposed scheme exploits the benefits of TC and CDMA schemes in order to assist the two-way relaying system to operate with a reduced transmit power. The reduction of the transmit power can also be exploited for increasing the coverage area of a cellular cell. Hence, the TC-CDMA two-way relaying scheme is a good candidate for future generation mobile systems

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More information

Published date: 30 March 2012
Venue - Dates: Progress In Electromagnetics Research Symposium, Kuala Lumpur, Malaysia, 2012-03-26 - 2012-03-29
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 344861
URI: http://eprints.soton.ac.uk/id/eprint/344861
PURE UUID: 0d39f37d-8546-4185-9fde-4ebd0f385e69
ORCID for Soon Xin Ng: ORCID iD orcid.org/0000-0002-0930-7194

Catalogue record

Date deposited: 08 Nov 2012 09:30
Last modified: 07 Oct 2020 05:49

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