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[1] Fang Xin**, You Xiaohu, Gao Xiqi,. A Novel TDD Multicarrier SystemUsing Pre-Equalizer in Downlink* [J]. Journal of Southeast University (English Edition), 2002, 18 (3): 201-204. [doi:10.3969/j.issn.1003-7985.2002.03.001]
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A Novel TDD Multicarrier SystemUsing Pre-Equalizer in Downlink*()
一种使用预均衡器的下行链路多载波系统的研究
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
18
Issue:
2002 3
Page:
201-204
Research Field:
Information and Communication Engineering
Publishing date:
2002-09-30

Info

Title:
A Novel TDD Multicarrier SystemUsing Pre-Equalizer in Downlink*
一种使用预均衡器的下行链路多载波系统的研究
Author(s):
Fang Xin**;  You Xiaohu;  Gao Xiqi
National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
方昕;  尤肖虎;  高西奇
东南大学移动通信国家重点实验室, 南京 210096
Keywords:
multicarrier system;  OFDM system;  TDD;  Nyquist filter bank;  pre-equalizer
多载波系统;  OFDM系统;  时分复用;  Nyquist 滤波器;  预均衡器
PACS:
TN929.533
DOI:
10.3969/j.issn.1003-7985.2002.03.001
Abstract:
In this paper, a time division duplex(TDD)multicarrier system based on Nyquist filter bank is proposed for wireless broadband communications. In this system a novel two-tap pre-equalizer is adopted to effectively suppress the inter-symbol interference(ISI). Studies show that the system has almost the same frequency spectrum efficiency as the orthogonal frequency division multiplexing(OFDM)system. Simulation results show that the proposed system outperforms the conventional OFDM system with one-tap maximum likelihood equalizer(MLE)in low signal-to-noise ratio(SNR)and is quite robust to carrier frequency offset.
提出了一个在无线宽带系统中的基于Nyquist滤波器的时分复用多载波系统.在这个系统中, 采用两抽头的预均衡器可以有效地抑制符号间干扰.研究表明该系统有着和正交频分多址复用系统同样的频谱利用率.仿真结果表明该系统在低信噪比下性能明显优于传统的OFDM系统.并且该系统对于载波频偏有一定的鲁棒性.

References:

[1] Hara S, Prasad R. Design and performance of multicarrier CDMA system in frequency selective rayleigh fading channel [J]. IEEE Trans On Vehicul Technology, 1999, 48(5):1584-1595.
[2] Pu Z, You X, Cheng S, Wang H. Transmission and reception of TDD multicarrier CDMA signals in mobile communication system [A]. Proc IEEE VTC’99[C]. Houston, TX, 1999. 2134-2138.
[3] Proakis J G. Digital communications. 4th ed[M]. New York: McGraw-Hill, 2001. 801-816.
[4] Sellars M P, Greaves S D, Wassell L J, et al. Stabilized precoder for indoor radio communication[J]. IEEE Commun Letter, 2000, 4(10):315-317.

Memo

Memo:
* The project supported by the Joint Research Project from Siemens.
** Born in 1975, female, graduate.
Last Update: 2002-09-20