多載波格狀編碼調(diào)制的實現(xiàn)和性能分析
THE REALIZATION AND PERFORMANCE ANALYSIS OF MULTI-CARRIER TRELLIS-CODED MODULATION
-
摘要: 本文綜合考慮復(fù)雜度、時延和實時性等因素,討論了格狀編碼應(yīng)用在多載波調(diào)制系統(tǒng)中的具體實現(xiàn)方案,并在ADSL DMT環(huán)境下對其性能進行了模擬分析。結(jié)果顯示,格狀編碼用于多載波調(diào)制系統(tǒng)時仍然能夠獲得大部分理論編碼增益。
-
關(guān)鍵詞:
- 多載波調(diào)制; 格狀編碼調(diào)制; 維特比譯碼; 編碼增益
Abstract: Taking account of the complexity, delay and realistic, this paper has discussed the realization arragement of the trellis-coded modulaiton applied to the multi-carrier modulation system. The simulation analysis has been taken in the ADSL DMT environments. According to the simulation results, the trellis-coded modulaiton can also obtain nearly the theoretical gain when used in the multi-carrier modulation system. -
Hirosaki B, Hasegawa S, Sabato A. Advanced group-band modem using orthogonally multiplexed[2]QAM technique. IEEE Trans. on Comm., 1986, COM-34(6): 587-592.[3]Ruiz A, Cioi J. A frequency domain approach to combined spectral shaping and coding. IEEE Int. Conf. Comm. Rec., Seattle WA: June, 1987, 1711-1715.[4]Ungerboeck G. Channel coding with multilevel /phase signals. IEEE Trans. on Inform. Theory, 1982, IT-28(1): 55-67.[5]Wei L F. Trellis-coded modulation with multidimensional constellations. IEEE Trans. on Inform. Theory, 1987, IT-33(4): 483-501.[6]Lou H.[J].CiofH J M. A programmable parallel processor aachitecture for viterbi detection. In Global Comm. Conf90., San Diego CA.1333,1990:-[7]劉丹譜,樂光新.DMT信道上的一種改進的實用比特分配算法.通信學(xué)報,已錄用. -
計量
- 文章訪問數(shù): 2017
- HTML全文瀏覽量: 110
- PDF下載量: 375
- 被引次數(shù): 0
下載:
