CDMA/TDD蜂窝系统的发射分集

VTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026) Pub Date : 2000-05-15 DOI:10.1109/VETECS.2000.851309

K. Hiramatsu, K. Miya, O. Kato, K. Homma

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引用次数: 6

摘要

本文给出了CDMA/TDD的小区搜索和开环发射分集的结果。物理同步信道(PSCH)的TSTD型发射分集可以缩短用户设备(UE)在低多普勒频率下的小区搜索时间。主公共控制信道(P-CCPCH)的分块STTD型发射分集比单天线传输能提高约3db的误码率。此外，作者还提出了开环型扇区/小区选择切换。与硬切换相比，根据多普勒频率的不同，使用该方案的扇区之间的改进几乎为2 dB，小区之间的改进为1.1 dB至1.6 dB。转换速率变为10ms时，f/sub D/=53 Hz时增益为0.8 dB, f/sub D/=222 Hz时增益为1.7 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Transmit diversity applied on the CDMA/TDD cellular systems

This paper shows that the result of cell search and open loop transmit divesty of CDMA/TDD. The TSTD type transmit diversity for the physical synchronisation channel (PSCH) can shorten the cell search time of user equipment (UE) at low Doppler frequency. The block STTD type transmit diversity for the primary common control channel (P-CCPCH) can improve the BER performance around 3 dB compared with a single antenna transmission. Furthermore the authors propose open loop type sector/cell selection handover. The improvement by using this scheme, as compared to hard handover, is almost 2 dB for between sectors and 1.1 dB to 1.6 dB for between cells, depending on the Doppler frequency. The change for the switching rate into 10 ms makes the gain of 0.8 dB at f/sub D/=53 Hz and 1.7 dB at f/sub D/=222 Hz, respectively.

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来源期刊

VTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026)

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