Candidate codeword selection scheme with bit flipping for outer code in overloaded MIMO-OFDM system

Yoshihito Doi; Yukitoshi Sanada

doi:10.1109/ISPACS.2014.7024476

Candidate codeword selection scheme with bit flipping for outer code in overloaded MIMO-OFDM system

Yoshihito Doi, Yukitoshi Sanada

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

This paper presents a candidate codeword selection scheme with bit flipping in two step joint decoding of block coded signals in an overloaded multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system. In previous literature, the two step joint decoding scheme has been proposed for complexity reduction of maximum likelihood decoding of a block code in the overloaded MIMO system. However, the two step decoding scheme has not been combined with an outer code. The selection of the candidate codewords in the inner block code may not always be able to provide the metric of a binary coded symbol for the outer code. Candidate codewords are then created through bit flipping in the proposed scheme. It is shown that the two step decoding scheme reduces the complexity by about 0.026 for 4 signal streams with the cost of bit error rate degradation within 0.5dB.

Original language	English
Title of host publication	2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	318-323
Number of pages	6
ISBN (Electronic)	9781479961207
DOIs	https://doi.org/10.1109/ISPACS.2014.7024476
Publication status	Published - 2014 Jan 27
Event	2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014 - Kuching, Sarawak, Malaysia Duration: 2014 Dec 1 → 2014 Dec 4

Other

Other	2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014
Country	Malaysia
City	Kuching, Sarawak
Period	14/12/1 → 14/12/4

ASJC Scopus subject areas

Artificial Intelligence
Computer Networks and Communications
Signal Processing

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10.1109/ISPACS.2014.7024476

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Candidate codeword selection scheme with bit flipping for outer code in overloaded MIMO-OFDM system. / Doi, Yoshihito; Sanada, Yukitoshi.

2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014. Institute of Electrical and Electronics Engineers Inc., 2014. p. 318-323 7024476.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Doi, Y & Sanada, Y 2014, Candidate codeword selection scheme with bit flipping for outer code in overloaded MIMO-OFDM system. in 2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014., 7024476, Institute of Electrical and Electronics Engineers Inc., pp. 318-323, 2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014, Kuching, Sarawak, Malaysia, 14/12/1. https://doi.org/10.1109/ISPACS.2014.7024476

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abstract = "This paper presents a candidate codeword selection scheme with bit flipping in two step joint decoding of block coded signals in an overloaded multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system. In previous literature, the two step joint decoding scheme has been proposed for complexity reduction of maximum likelihood decoding of a block code in the overloaded MIMO system. However, the two step decoding scheme has not been combined with an outer code. The selection of the candidate codewords in the inner block code may not always be able to provide the metric of a binary coded symbol for the outer code. Candidate codewords are then created through bit flipping in the proposed scheme. It is shown that the two step decoding scheme reduces the complexity by about 0.026 for 4 signal streams with the cost of bit error rate degradation within 0.5dB.",

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