发射自适应阵列反馈信道延迟的灵敏度

Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367) Pub Date : 2002-08-07 DOI:10.1109/VTC.2002.1002543

Cheol-Yong Ahn, Jin-Kyu Han, Young-Kwan Choi, Dong Ku Kim

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引用次数: 0

摘要

研究各种反馈误差对系统性能的影响，有助于鲁棒反馈信道的设计和准确反馈信道信息的传递。我们研究了在频率平坦衰落信道上确定空间组合权向量以最大化手机接收信号功率的算法，并研究了采用发射波束形成的FDD/CDMA系统中反馈信道延迟对性能的影响。我们观察了反馈信道延迟对发射天线数量的影响以及信道的时空相关性。结果表明，当发射天线处的衰落不具有空间相关性时，随着天线数的增加，系统性能对反馈延迟更加敏感。

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Sensitivity of feedback channel delay on transmit adaptive array

The investigation into the effect of various feedback errors on system performance can help the robust feedback channel design and transmission of exact feedback channel information as well. We address the algorithm that determines space combining weight vector maximizing received signal power at the mobile on a frequency flat fading channel and investigate the performance degradation by the feedback channel delay in the FDD/CDMA systems employing transmit beamforming. We observe the effect of feedback channel delay corresponding to the number of transmit antennas and the temporal/spatial correlation of channel. The results show that performance is more sensitive to feedback delay with the larger number of antennas when fading at the transmit antennas are not spatially correlated.

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来源期刊

Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367)

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