| Presentation | 2002/5/17 Performance of Low-Density Parity-Check (LDPC) Code with UMP P-based Algorithm and Quantizer on Rayleigh Fading Channels Akinori OHASHI, Tomoaki OHTSUKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, low density parity check (LDPC) codes have been expected to be applied to wireless communications. Some papers have applied LDPC codes to wireless communications where the belief propagation (BP) algorithm is employed as a decoding algorithm As a decoding algorithm particularly in wireless communications, a simpler decoding algorithm is preferred. The Uniformly Most Powerful (UMP) BP-based algorithm has a lower decoding complexity than the BP algorithm. In addition, the UMP BP-based algorithm is universal as it does not need any a priori information about the channel state. This characteristic is very atractive particuarly in wireless communications where the channel state changes frequently. However, the performance of LDPC codes with the UMP BP-based algorithm in wireless communications has not been clarified. We evaluate the error rate performance of LDPC codes with the BP algorithm and the UMP BP-based algorithm on a Rayleigh fading channel. We also evaluate the effects of quantization with these two algorithms on AWGN and Rayleigh fading channels. The results indicate that the UMP BP-based algorithm can achieve a good trade-off between error rate performance and decoding complexity. Also, in LDPC Coded BPSK with the two algorithms, the error rate performance for 5-bit quantization is identical to that for no quantization. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LDPC / Wireless Communications / UMP BP-based / Quantization |
| Paper # | RCS2002-56 |
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| Committee | RCS |
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| Conference Date | 2002/5/17(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance of Low-Density Parity-Check (LDPC) Code with UMP P-based Algorithm and Quantizer on Rayleigh Fading Channels |
| Sub Title (in English) | |
| Keyword(1) | LDPC |
| Keyword(2) | Wireless Communications |
| Keyword(3) | UMP BP-based |
| Keyword(4) | Quantization |
| 1st Author's Name | Akinori OHASHI |
| 1st Author's Affiliation | Graduate School of Science and Technology, Tokyo University of Science() |
| 2nd Author's Name | Tomoaki OHTSUKI |
| 2nd Author's Affiliation | Faculty of Science and Tehnology, Tokyo University of Science |
| Date | 2002/5/17 |
| Paper # | RCS2002-56 |
| Volume (vol) | vol.102 |
| Number (no) | 86 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |