期刊文献+

一种多波形调制系统中的码片级判决反馈均衡器

A Chip-Level Decision-Feedback Equalizer for Multipulse Modulation
下载PDF
导出
摘要 多波形调制是指一个码元可以由多个波形来表示多个比特的调制方法,其中每一个波形由一组码片组成,所以可以看作是直接序列扩频调制的推广.由于这种调制方式比直扩具有更高的频谱效率,所以在高速无线通信系统中正受到越来越多的重视.本文针对这种调制系统,研究了一种码片级的判决反馈均衡器(DFE),导出了这种均衡器在最小均方误差(MMSE)准则下的最优权系数.为了降低其计算量,提出了一种低复杂度实现算法.仿真结果表明,这种均衡器的性能优于码片级线性均衡器,也优于只抑制码元间干扰(ISI)的码元级判决反馈均衡器.
出处 《信号处理》 CSCD 2003年第z1期265-268,共4页 Journal of Signal Processing
  • 相关文献

参考文献8

  • 1[1]IEEE standard 802.11b, Wireless LAN Medium Access Control(MAC) and Physical Layer (PHY) Specifications: High-Speed Physical Layer in the 2.4 GHz Band, 1999.
  • 2[2]IEEE standard 802.15.4, Wireless Medium Access Control (MAC)and Physical Layer (PHY) Specifications for Low Rate Wireless Personal Area Networks(LR-WPANs), 2003.
  • 3[3]S. Tantikovit and A. U. H. Sheikh, "Joint multipath diversity combining and MLSE equalization (RAKE-MLSE receiver) for WCDMA systems," Vehicular Technology Conference Proceedings,2000, vol. 1, pp. 435-439.
  • 4[4]M. Abdulrahman, A. U. H. Sheikh, and D. D. Falconer, "Decision feedback equalization for CDMA in indoor wireless communications," IEEE J. Selected Areas Communications, vol. 12,pp. 698-706, May 1994.
  • 5[5]P. G. Flikkema, "Multipath combining/cancelling DS spread spectrum detection," in Conference Record of the Thirty-First Asilomar Conference on Signals, Systems & Computers, 1997, vol.1, pp. 811-815.
  • 6[6]K. Hooli, M. Latva-Aho and M. Juntti, "Performance evaluation of adaptive chip-level channel equalizers in WCDMA downlink,"IEEE International Conference on Communications, 2001, vol. 6,pp. 1974-1979.
  • 7[7]J. Yang and Y. Li, "A decision-feedback equalizer with tentative chip feedback for the downlink of wideband CDMA," IEEE International Conference on Communications, 2002, vol. 1, pp.119-123.
  • 8[8]E. A. Lee, and D. G.. Messerschmitt, Digital Communication,Kluwer Academic Publishers, 1994.

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部