多载波格状编码调制的实现和性能分析
THE REALIZATION AND PERFORMANCE ANALYSIS OF MULTI-CARRIER TRELLIS-CODED MODULATION
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摘要: 本文综合考虑复杂度、时延和实时性等因素,讨论了格状编码应用在多载波调制系统中的具体实现方案,并在ADSL DMT环境下对其性能进行了模拟分析。结果显示,格状编码用于多载波调制系统时仍然能够获得大部分理论编码增益。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.
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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]刘丹谱,乐光新.DMT信道上的一种改进的实用比特分配算法.通信学报,已录用. -
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