Title :
On the Compensation of RF Impairments with Multiple Antennas in SIMO OFDM Systems
Author :
Morlat, P.F. ; Pérez, J. C Nuñez ; Villemaud, G. ; Verdier, J. ; Gorce, J.M.
Author_Institution :
CITI Lab., INSA de Lyon, Villeurbanne
Abstract :
This paper provides an analysis of the impact of radio frequency (RF) front end impairments (I/Q gain and phase imbalance, phase noise, non-linear distortion and direct current offset) on the performance of a single input multiple output orthogonal frequency division multiplexing (SIMO OFDM) receiver. We developed a new estimation/compensation scheme to jointly compensate for the effect of multipath and RF non- idealities on baseband signals in the special case of Zero-IF receivers. Some first results illustrating this approach are presented for a 4 antenna 802.11 g receiver with the SMI algorithm and with or without IQ imbalance, as well as BER curves for different phase noise models.
Keywords :
OFDM modulation; antenna arrays; compensation; estimation theory; matrix inversion; radio receivers; wireless LAN; 802.11 g receiver; BER curves; RF impairment compensation; SIMO OFDM systems; SMI algorithm; WLAN; Zero-IF receivers; baseband signals; estimation scheme; multipath effect; multiple antennas; phase noise models; sample matrix inversion; single input multiple output orthogonal frequency division multiplexing; Baseband; Nonlinear distortion; OFDM; Performance analysis; Performance gain; Phase distortion; Phase noise; RF signals; Radio frequency; Receivers;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC-2006 Fall. 2006 IEEE 64th
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0062-7
Electronic_ISBN :
1-4244-0063-5
DOI :
10.1109/VTCF.2006.109
