碼片均衡導(dǎo)頻抵消Rake聯(lián)合接收
Chip Equalizer Combined with Pilot Cancellation and Rake
-
摘要: 碼片均衡是提高第三代移動(dòng)通信系統(tǒng)性能的關(guān)鍵技術(shù)之一。為了增強(qiáng)碼片均衡器的性能,該文提出了一種新的碼片均衡導(dǎo)頻抵消Rake聯(lián)合接收機(jī)方案,給出了導(dǎo)頻抵消算法,分析了3種典型的碼片均衡器及低擴(kuò)頻比下的Rake接收與導(dǎo)頻抵消的一些特征。計(jì)算機(jī)模擬結(jié)果證明與碼片均衡器相比,聯(lián)合接收機(jī)無(wú)論在小擴(kuò)頻比還是大擴(kuò)頻比,一股信道還是嚴(yán)重失真信道的條件下,均有較大的性能增益。Abstract: Chip equalization is one of the key technologies for improving the performance of the 3rd generation mobile communication system. In order to enhance the performance of the chip equalizer, a new scheme of chip equalizer jointed with pilot cancellation and Rake is presented in this paper. Computer simulations show that the new scheme effectively improves the performance of the receiver.
-
Hooli K, Juntti M. Inter-path interference suppression in WCDMA systems with low spreading factors [A]. VTC99, IEEE [C], Rio de Janciro Brazil: 1999:421 - 425.[2]Prator O, Unger C, Zoch A, Fettweis G P. Performance of adaptive chip equalization for the WCDMA downlink in fast changing environments[A]. IEEE 7th Int. Symp. on SpreadSpectrum Tech. Appl., Prague, Czeech Republic: 2002:273 - 277.[3]Hooli K, Latva-Aho M, Juntti M. Performance evaluation of adaptive chip-level channel equalizers in WCDMA downlink [A].Proc. IEEE International Conference on Communications 2001,Helsinki Finland: 2001 vol. 6:1974 - 1979.[4]Komulainen P, Heikkila M J, Lilleberg J. Adaptive channel equalization and interference suppression for CDMA downlink [A]. IEEE International Symposium on Spread-Spectrum Techniques and Applications 2000, NJ: 2000, vol. 2:363 - 367.[5]Rappaport T S. Wireless Communications Principles Practice [M]. Beijing China: Publishing House of Electronics Industry,1998:312 - 316.[6]Haykin S. Adaptive Filter Theory[M]. Beijing, China: Publishing House of Electronics Industry, 2002:102 - 103.[7]Montazeri M, Duhamel P. A set of algorithms linking NLMS and RLS algorithms[J].IEEE Trans. on Signal Processing.1995,43(2):444-[8]胡健棟,鄭朝暉.碼分多址與個(gè)人通信[M].北京:人民郵電出版社,1996,第六章. -
計(jì)量
- 文章訪問(wèn)數(shù): 2136
- HTML全文瀏覽量: 113
- PDF下載量: 699
- 被引次數(shù): 0
下載:
