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http://hdl.handle.net/10119/4815
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| タイトル: | Trellis decoding of linear block codes in digital mobile radio |
| 著者: | Matsumoto, T. |
| 発行日: | 1988-01 |
| 出版者: | Institute of Electrical and Electronics Engineers (IEEE) |
| 誌名: | 1988 IEEE 38th Vehicular Technology Conference |
| 開始ページ: | 6 |
| 終了ページ: | 11 |
| DOI: | 10.1109/VETEC.1988.195328 |
| 抄録: | Word error rate (WER) performance with soft decision decoding of linear block codes using a trellis is investigated for noncoherent FSK (frequency-shift keying) in a Rayleigh fading channel. The received signal envelopes corresponding to each bit of the code are sampled and used for estimating reliability of the bits. Hamming (7,4) code is used for WER performance evaluation by means of computer simulation and laboratory experiments. The simulation results show that required SNR to obtain a WER of 10＾<-3> for trellis decoding is about 5 dB lower than that for minimum distance decoding with 1-bit error correction when (maximum Doppler frequency) × (bit interleaving degree)/(bit rate) >= 0.2. The effect of n-bit A/D conversion in signal envelope sampling is also investigated. A simplified trellis decoding algorithm, in which the hard decision output of a bit with the envelope sample greater than the threshold value is accepted as correct, is presented for complexity reduction. |
| Rights: | Copyright (c)1988 IEEE. Reprinted from 1988 IEEE 38th Vehicular Technology Conference. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of JAIST's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. |
| URI: | http://hdl.handle.net/10119/4815 |
| 資料タイプ: | publisher |
| 出現コレクション: | b11-1. 会議発表論文・発表資料 (Conference Papers)
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| 181-15.pdf | | 417Kb | Adobe PDF | 見る/開く |
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