Title :
Transmit antenna array techniques for cellular CDMA systems
Author :
Liang, Ying-Chang ; Chin, Francois
Author_Institution :
Centre for Wireless Commun., Singapore
Abstract :
Adaptive antenna arrays can be employed to improve the transmission quality and thus to increase the capacity of wireless communication systems. We address the transmit antenna array techniques for base-to-mobile (downlink) transmission in frequency-division-duplex (FDD) based cellular CDMA systems. A new criterion for transmit weight estimation is developed, which is based upon maximizing the transmit signal-to-interference-plus-noise ratio (SINR) and using downlink channel responses estimated by a probing feedback approach. Computer simulations show that the new transmit antenna array technique is effective for improving the capacity of the wireless communication systems
Keywords :
adaptive antenna arrays; cellular radio; channel capacity; code division multiple access; feedback; multiuser channels; parameter estimation; radio links; radiofrequency interference; transmitting antennas; FDD; adaptive antenna arrays; base-to-mobile transmission; capacity; cellular CDMA systems; channel responses; computer simulations; downlink; frequency-division-duplex system; probing feedback; signal-to-interference-plus-noise ratio; transmission quality; transmit SINR; transmit antenna array techniques; transmit weight estimation; wireless communication systems; Adaptive arrays; Adaptive systems; Antenna arrays; Downlink; Feedback; Frequency; Multiaccess communication; Signal to noise ratio; Transmitting antennas; Wireless communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-4872-9
DOI :
10.1109/PIMRC.1998.731427
