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2008

Transmitter-based processing for down-link DS/CDMA systems with multiple transmit antennas

8 years 6 months ago
Transmitter-based processing for down-link DS/CDMA systems with multiple transmit antennas
In cellular wireless communication systems, there have been various receiver-based techniques for performance improvement. However, it may be desirable to use transmitterbased techniques to improve the down-link capacity, since the implementation complexity is less critical at a base station (BS) than at a mobile station (MS). This paper presents a transmitterbased processing for the down-link direct-sequence code-division multiple-access (DS/CDMA) systems with multiple transmit antennas. We propose a combined pre-rake/pre-decorrelating approach. This approach combines the advantage of pre-rake scheme, to achieve diversity gain and average received signal-tonoise ratio (SNR) gain, with that of pre-decorrelating scheme, to suppress multiple access interference (MAI) and multipath interference (MPI). Furthermore, to make the total transmit power the same as that without pre-rake/pre-decorrelating processing, two power normalization methods are presented. Simulation results show that the ...
Chang Park, Kwang Lee
Added 15 Dec 2010
Updated 15 Dec 2010
Type Journal
Year 2008
Where TCOM
Authors Chang Park, Kwang Lee
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