臺灣博碩士論文加值系統

區塊衰退通道是無線通訊常見的通道模型，而非同調檢測因不需傳送前導符元做通道估測，所以沒有速率損失的問題。就我們所知，沒有針對區塊衰退通道之非同調區塊碼的相關研究發表，在此篇論文中，我們將研究此主題。我們先使用電腦搜尋無結構的短區塊碼，接著提出用短的區塊碼串成長區塊碼的架構。最後，我們將這些區塊碼串接渦輪碼以進一步改善錯誤效能。電腦模擬結果顯示，與前導符元協助調變相比，我們的碼都具有較好的錯誤率。

A block fading channel is a common wireless communication channel model. Unlike pilot symbol assisted modulation (PSAM), noncoherent detection does not has the problem of rate loss due to pilot symbols. As far as we know, there are no research results of noncoherent block codes for block fading channels. In this thesis, we focus on this subject. First, short noncoherent block codes without structures are searched by computers. Then, a scheme of long noncoherent block codes composed of short noncoherent block codes is proposed. Finally, the obtained codes are concatenated with a turbo code for further improving the error performance. Simulation results show that, compared with PSAM, our codes have better error performance.

論文摘要 i
Abstract ii
誌 謝 iii
目 錄 iv
圖表目錄 vi
第一章 緒論 1
1.1研究動機 1
1.2內容介紹 1
1.3通道模型 2
第二章 回顧 3
2.1 非同調接收器 3
2.2 搜尋演算法 3
2.3 位元對應演算法的回顧 4
2.4 Pilot Symbol Assisted Modulation 5
第三章 用於區塊衰退通道之非同調區塊碼 6
3.1 區塊長度為4之區塊碼的搜尋結果 6
3.1.1 搜尋結果 6
3.1.2 響導符元協助調變(PSAM) 21
3.1.3 錯誤效能 22
3.2 塊長度為10之區塊碼的搜尋結果 34
第四章 非同調區塊碼串接渦輪碼 43
4.1 系統說明 43
4.2 解碼演算法 44
4.3 碼搜尋結果串接渦輪碼之錯誤率 46
4.3.1短區塊碼串接渦輪碼之位元錯誤率 46
4.3.2短區塊碼組成之長區塊碼串接渦輪碼之位元錯誤率 50
第五章 結論 52
參考文獻 53

[1] R. Knopp and H. Leib, “M-ary coding for the noncoherent AWGN channel,” IEEE Trans. Inform. Theory, vol. 40, pp. 1968-1984, Nov. 1994.
[2] R. Y. Wei, “Nocoherent block-coded MPSK,” IEEE Trans. Commun., vol. 53, pp.978-986, June 2005.
[3] R. Y. Wei and Y. M. Chen, “Further results on noncoherent block-coded MPSK,” IEEE Trans. Commun., vol. 56, no. 10, pp. 1616-1625, Oct. 2008.
[4] R. Y. Wei, “Differential encoding by a look-up table for quadratureamplitude
modulation,” IEEE Trans. Commun., vol. 59, pp. 84-94, Jan.2011.
[5] R. Y. Wei, S. S. Gu, and T. C. Sue, “Noncoherent block-coded TAPSK, ” IEEE Trans. Commun., vol. 57, no. 11, pp. 3195-3198, Nov. 2009.
[6] R. Y. Wei, T. S. Lin and S. S. Gu, “Noncoherent block-coded TAPSK and 16QAM using linear component codes, ” IEEE Trans. Commun., vol. 58, no. 9, pp. 2493-2498, Sep. 2010.
[7] 謝佩恩,“以電腦搜尋之短非同調區塊碼”國立中央大學通訊工程研究所,碩士論文, 六月. 2011.
[8] U. Wachsmann, R. F. H. Fischer and J. B. Huber, “Multilevel codes: theoretical concepts and practical design rules,” IEEE Trans. Inform. Theory, vol. 45, pp. 1361-1391, July 1999.
[9] S. Sayegh, “A class of optimum block codes in signal space,” IEEE Trans. Commun., vol. 30, pp. 1043-1045, Oct. 1986.
[10] T. Kasami, T. Takata, T. Fujiwara and S. Lin, “On multilevel block modulation codes,” IEEE Trans. Inform. Theory, vol. 37, pp. 965-975, July 1991.
[11] U. Wachsmann, R. F. H. Fischer and J. B. Huber, “Multilevel codes: theoretical concepts and practical design rules,” IEEE Trans. Inform. Theory, vol. 45, pp. 1361-1391, July 1999.

[12] G. Ungerboeck, “Channel coding with multilevel/phase signals,” IEEE Trans. Inform. Theory, vol. 28, pp. 55-67, Jan. 1982.
[13] F. W. Sun and H. Leib, “Multiple-phase codes for detection without carrier phase reference,” IEEE Trans. Inform. Theory, vol. 44, pp. 1477-1491, July 1998.
[14]M. L. McCloud, M. Brehler, and M. K. Varanasi,“Signal design and convolutional coding for noncoherent space-time communication on the block-Rayleigh-fading channel,”IEEE Trans. Inform. Theory, vol. 48, pp. 1186-1194, May 2002.
[15] K. Zeger and A. Gersho, “Pseudo-fray coding,” IEEE Trans. Commun., vol. 38, pp 2147-2158, Dec. 1990.
[16] Y. Li and X. G. Xia, “Constellation mapping for space-time matrix modulation with iterative demodulation/decoding,”IEEE Trans. Commun., vol. 53, pp 764-768, Nov. 2005.
[17] H. Imai and S. Hirakawa, “A new multilevel coding method using error correcting codes,” IEEE Trans. Inform. Theory, vol. 23, pp. 371-376, May 1977.
[18] R. Y. Wei, T. S. Lin and S. S. Gu, ‘‘Block-coded 16QAM for noncoherent decoding,’’ to appear in Proc. IEEE Wireless Communications and Networking Conference (WCNC), Sydney, Apr. 2010.
[19] B.M.Hochwald and T.L. Marzetta,“Unitary space-time modulation for multiple-antenna communications in Rayleigh flat fading,”IEEE Trans Inf. Theory, vol. 46, no. 2, pp. 543-564, Mar. 2000.
[20]C. Berrou and A. Glavieux “Near optimum error correcting coding and decoding :turbo- codes,” IEEE Trans. Commum.,vol.44,pp.1261-1271,Oct.1996.
[21] Y. M. Chen,“Noncoherent Amplitude/Phase Modolated Transmission Schemes for Rayleigh Block Fading Channels.” IEEE Trans. Commun., vol. 61, No. 1, Jan. 2013.