SHERP

An efficient downlink beamforming scheme for FDD/SDMA systems

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Authors
Lee, Ki-Yong; Yang, Jae-Seong; Lee, Yong-Hwan
Issue Date
2004-06
Citation
Proc. IST Mobile and Wireless Communications Summit, June 2004
Keywords
downlinkbeamformingSDMAFDD
Abstract
Without channel information of the downlink, the base
station can generate downlink beam pattern using the
weight vector used for the uplink. In the frequency division
duplex system, however, it may result in significant
performance degradation due to the carrier frequency
offset between the uplink and downlink. To resolve this
problem, we propose an efficient downlink beamforming
algorithm based on a least square method with constraints.
We also consider the control of null depth to obtain a
desired signal to interference power ratio. Simulation
results show that the proposed scheme can sufficiently
reduce the interference from other users, improving the
BER performance in the downlink.
Language
English
URI
http://hdl.handle.net/10371/7268
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Others_전기·정보공학부
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