TY - GEN
T1 - RF beamforming considering RF characteristics in MIMO system
AU - Jo, Kyung Tae
AU - Ko, Young Chai
AU - Yang, Hong Chuan
PY - 2010
Y1 - 2010
N2 - We propose the multiple-antenna RF beamforming scheme. The proposed scheme adopts the phase shifters and gain controllers in RF domain to compensate the wireless fading channels which is usually operated on the digital domain in the conventional beamforming scheme. Accordingly, the pro- posed scheme can have only single analog-to-digital/digital-to-analog (ADC/DAC) since the signals from multiple antennas are beamformed in the RF domain. Also, we propose the codebook search algorithm based on the codebook switching for the channel estimation and apply it to the phase shifter and the gain controller for the beamforming in the RF domain. Based on the analysis of output SNR of the proposed scheme and the simulations we show that the deterioration of BER performance compared to the optimal baseband beamforming techniques in MIMO-MRC [2] is not significant, while the power consumption is much reduced and the requirement of the digital hardware for baseband MODEM is much relaxed owing to the single ADC/DAC both at the transmitter and the receiver.
AB - We propose the multiple-antenna RF beamforming scheme. The proposed scheme adopts the phase shifters and gain controllers in RF domain to compensate the wireless fading channels which is usually operated on the digital domain in the conventional beamforming scheme. Accordingly, the pro- posed scheme can have only single analog-to-digital/digital-to-analog (ADC/DAC) since the signals from multiple antennas are beamformed in the RF domain. Also, we propose the codebook search algorithm based on the codebook switching for the channel estimation and apply it to the phase shifter and the gain controller for the beamforming in the RF domain. Based on the analysis of output SNR of the proposed scheme and the simulations we show that the deterioration of BER performance compared to the optimal baseband beamforming techniques in MIMO-MRC [2] is not significant, while the power consumption is much reduced and the requirement of the digital hardware for baseband MODEM is much relaxed owing to the single ADC/DAC both at the transmitter and the receiver.
UR - http://www.scopus.com/inward/record.url?scp=78751543659&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78751543659&partnerID=8YFLogxK
U2 - 10.1109/ICTC.2010.5674816
DO - 10.1109/ICTC.2010.5674816
M3 - Conference contribution
AN - SCOPUS:78751543659
SN - 9781424498062
T3 - 2010 International Conference on Information and Communication Technology Convergence, ICTC 2010
SP - 403
EP - 408
BT - 2010 International Conference on Information and Communication Technology Convergence, ICTC 2010
T2 - 2010 International Conference on Information and Communication Technology Convergence, ICTC 2010
Y2 - 17 November 2010 through 19 November 2010
ER -