Title :
OFDM-MIMO WLAN AP front-end gain and phase mismatch calibration
Author :
Liu, Jian ; Bourdoux, André ; Craninckx, Jan ; Wambacq, Piet ; Côme, Boris ; Donnay, Stephane ; Barel, Alain
Author_Institution :
IMEC, Leuven, Belgium
Abstract :
The work presents a front-end gain and phase mismatch calibration scheme for OFDM-MIMO/TDD WLAN systems using transmit-processing, where complete channel reciprocity and calibration of the access point (AP) hardware is needed. Simulation results for a single-user 2×2 OFDM-MIMO system with QAM-64 modulation show that our calibration method can reduce the implementation loss to as little as 0.2 dB at a coded BER of 10-5 The calibration scheme has been implemented and demonstrated by IMEC.
Keywords :
MIMO systems; OFDM modulation; calibration; error statistics; quadrature amplitude modulation; time division multiplexing; transceivers; wireless LAN; 0.2 dB; OFDM-MIMO WLAN AP front-end gain calibration; QAM-64 modulation; TDD; access point hardware; analog transceiver; channel reciprocity; coded BER; phase mismatch calibration; transmit-processing; AWGN; Baseband; Bit error rate; Calibration; Hardware; MIMO; Radio frequency; Signal processing; Transfer functions; Wireless LAN;
Conference_Titel :
Radio and Wireless Conference, 2004 IEEE
Print_ISBN :
0-7803-8451-2
DOI :
10.1109/RAWCON.2004.1389095
