Title :
Integration of transmit power control, transmit diversity and receive beamforming
Author :
Novakovic, Dejan M.
Author_Institution :
Centre for Wireless Commun., Oulu Univ., Finland
Abstract :
In this paper an algorithm for joint power control, transmit diversity and receive beamforming is proposed where transmit diversity and receive beamforming weight vectors and downlink power allocations are calculated jointly such that signal to interference ratio at each mobile is above threshold. Since in the frequency division duplex network uplink and downlink are not reciprocal, transmit diversity weight vectors are determined using partial phase combining and only few bits are fed back from mobile to base station. It has been shown that this algorithm offers considerable savings in the total transmitted power and significantly improves the downlink capacity in a network where only high data rate users use the proposed algorithm with two antennas at the mobile terminal
Keywords :
adaptive antenna arrays; array signal processing; cellular radio; diversity reception; power control; telecommunication control; DS-CDMA; base station; cellular radio networks; downlink capacity; downlink power allocations; frequency division duplex network downlink; frequency division duplex network uplink; mobile radio; partial phase combining; receive beamforming; signal to interference ratio; transmit diversity; transmit power control; weight vectors; Array signal processing; Base stations; Diversity reception; Downlink; Feedback; Frequency conversion; Interference; Mobile antennas; Power control; Wireless communication;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.937067
