A novel equalizer structure for two-dimensional modulations with coherent demodulation

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题名:	A novel equalizer structure for two-dimensional modulations with coherent demodulation
作者:	張清濠;Chang, Ching-Haur
贡献者:	光電與通訊學系
关键词:	Coherent Demodulation;Non-Coherent Demodulation;Equalizer;Symbol Error Rate
日期:	2012-06
上传时间:	2012-11-26 02:22:09 (UTC+0)
摘要:	"A novel equalizer structure capable of correcting channel distortion for two-dimensional modulations with coherent demodulation was presented. Based on the fact that the phase of the in-phase and quadrature sinusoids in the receiver must be synchronized to the phase shift introduced by the communication channel, a structure using a pair of real-valued equalizers, one for the in-phase and the other for the quadrature channels, was developed in this paper. Conventional approaches in this regard use structures with complex-valued arithmetic and thus call for a much higher computational complexity. Due to the fact that only real-valued arithmetic is needed for the new structure, a saving of 50% multiplications, compared to its complex-valued counterpart, is thus achieved even with a better symbol error rate performance. A more-with-less approach is thus obtained by using the new approach. Computer simulation results justified the assertions made in this paper."
關聯:	International Journal of Electronics, Communication & Instrumentation Engineering Research and Development
显示于类别:	[光電與通訊學系] 期刊論文

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