Title :
Computationally efficient compensations for some smart antenna systems
Author :
Song, Young Seog ; Kwon, Dong Seung
Author_Institution :
Mobile Telecommun. Res. Lab., Electron. & Telecommun. Res. Inst., Daejon, South Korea
Abstract :
Some smart antenna systems need calibration, which measures the transmitter/receiver circuit path gains for each antenna and compensate the differences. Compensation is usually done in baseband using complex number multiplications. We propose efficient compensations for some time division duplex (TDD) smart antenna systems that use the channel reciprocity for downlink beamforming, and show that the number of arithmetic operations can be significantly reduced.
Keywords :
adaptive antenna arrays; array signal processing; calibration; compensation; receiving antennas; time division multiplexing; transmitting antennas; TDD; antenna calibration; antenna path difference compensation; arithmetic operations; channel reciprocity; complex number multiplication; downlink beamforming; receiver circuit path gains; smart antenna systems; time division duplex; transmitter circuit path gains; Antenna measurements; Array signal processing; Baseband; Calibration; Circuits; Downlink; Gain measurement; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1405002
