Half-Duplex Relaying with Serially-Concatenated Low-Density Generator Matrix (SCLDGM) Codes

Recently, the integration of cooperation with coding has proven to be a very useful technique to enhance relay system performance. Relay systems based on low-density parity check (LDPC) codes have the potential to approach the theoretical information limits very closely. However, LDPC codes have a d...

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Bibliographic Details
Published in2010 IEEE 71st Vehicular Technology Conference pp. 1 - 5
Main Authors Kumano, Yusuke, Ohtsuki, Tomoaki
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2010
Subjects
Bit error rate
Computer science
Computer simulation
Concatenated codes
Decoding
Parity check codes
Protocols
Receiving antennas
Relays
System performance
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Summary:Recently, the integration of cooperation with coding has proven to be a very useful technique to enhance relay system performance. Relay systems based on low-density parity check (LDPC) codes have the potential to approach the theoretical information limits very closely. However, LDPC codes have a disadvantage in that the encoding complexity is high. To solve this problem, serially-concatenated low-density generator matrix (SCLDGM) codes are attracting attentions due to its low encoding complexity. However, the performance of SCLDGM coded relaying has not been investigated. In this paper, we apply SCLDGM codes to relay channel with the motivation of lowering the encoding complexity. Because SCLDGM codes are concatenated codes, we cannot use the same method as LDPC coded relaying. We propose a new relaying system and three cooperation protocols suited for SCLDGM codes. Computer simulation results show that the BER performance of the proposed system equals to that of conventional LDPC coded relaying system.
ISBN:1424425182
9781424425181
ISSN:1550-2252
DOI:10.1109/VETECS.2010.5494087