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http://dx.doi.org/10.7840/KICS.2011.36A.6.577

Estimation of soft decision channel gain for coded MIMO system  

Kim, Young-Min (전북대학교 전자공학부 디지털통신시스템 연구실)
Shang, Ping Ping (전북대학교 전자공학부 디지털통신시스템 연구실)
Kim, Soo-Young (전북대학교 전자공학부 디지털통신시스템 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.6A, 2011 , pp. 577-586 More about this Journal
Abstract
Modem digital communication systems are required to use forward error correction (FEC) codes to combat inevitable channel impairment. Turbo codes or low density parity check (LDPC) codes, using iterative decoding with soft decision detection (SDD) information, are the most common examples. The excellent performance of these codes should be conditioned on accurate estimation of soft decision detection information. In order to use FEC codes with iterative decoding for Multi-Input Multi-Output (MIMO) system, reliable soft decision channel gain should be provided. In this paper, we investigate efficient SDD methods for turbo-coded MIMO system, and derive the corresponding formulas of SDD for various MIMO detection schemes. We present simulation results of the derived SDD schemes for turbo-coded MIMO systems, and show that the presented results almost approximate to maximum likelihood detection performance with much less computational load.
Keywords
Multi-Input Multi-Output (MIMO); soft decision detection; turbo codes;
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Times Cited By KSCI : 1  (Citation Analysis)
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