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Kyungchul Kwak, Sungeun Lee, and Daesik Hong, "The Role of Phase Compensation in Preventing Channel Dispersion in Variable Gain Relay OFDM Systems," IEEE Trans. Veh. Technol., Feb 2010
[IEEE Trans. Veh. Technol.]
조회 69796
Status : | Published |
---|---|
Date : | 2010-02 |
Title : | The Role of Phase Compensation in Preventing Channel Dispersion in Variable Gain Relay OFDM Systems |
Authors : | Kyungchul Kwak, Sungeun Lee, and Daesik Hong |
Journal : | IEEE Transactions on Vehicular Technology |
Abstract : | We show that the length of a composite channel is regarded up to the whole symbol duration for variable-gain relay (VGR), which generates the received power constant instantaneously. The enlarged channel length causes system burden, which is due to long-channel estimation, i.e., an increase in pilot overhead, a decrease in bandwidth efficiency, and a degradation of system performance. To prevent this effect and minimize the length of the composite channel, phase compensation of the source-relay (S-R) link channel should be added to the VGR, although this addition increases complexity. A system that adopts VGR with phase compensation performs better and has higher bandwidth efficiency. |
URL : | http://ieeexplore.ieee.org/xpls/abs_all....er=5415853 |
Download : | http://mirinae.yonsei.ac.kr/?module=file...fe200a26f9 |
Kyungchul Kwak; Sungeun Lee; Daesik Hong; , "The Role of Phase Compensation in Preventing Channel Dispersion in Variable-Gain Relay OFDM Systems," Vehicular Technology, IEEE Transactions on , vol.59, no.2, pp.1005-1011, Feb. 2010
doi: 10.1109/TVT.2009.2035045
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5415853&isnumber=5415848
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