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Effects of Power Ramping for ARQ-Aided Downlink Time Switched Transmit Diversity in the WCDMA LCR-TDD System  

Ma, Ri-A (Dongguk University)
Jeon, Cha-Eul (Dongguk University)
Hwang, Seung-Hoon (Dongguk University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.46, no.10, 2009 , pp. 52-56 More about this Journal
Abstract
In this paper, we investigate the performance of the ARQ-aided downlink Time Switched Transmit Diversity (TSTD) in the WCDMA LCR-TDD system, when power ramping is applied. The proposed power ramping scheme ramps up the transmission power and then retransmits the data, when the receiver sends the response signal (ACK or NACK signal) to the transmitter and the response signal is NACK signal. Simulation results demonstrate that the proposed scheme yields about 0.7dB performance gain in terms of average Eb/N0, compared with the conventional ARQ-aided TSTD when a mobile speed is 3km/h and an frame error rate (FER) is 1%, respectively. In addition, 2.5% of throughput gain is shown when average Eb/N0 is equal to 0dB.
Keywords
TSTD; automatic repeat request (ARQ); transmit diversity; WCDMA; LCR-TDD; Power Ramping;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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