Title :
Analytical BER Performance of M-QAM-OFDM Systems in the Presence of IQ Imbalance
Author :
Zareian, Hassan ; Vakili, Vahid TabaTaba
Author_Institution :
Iran Univ. of Sci. & Technol., Tehran
Abstract :
It is well known that the performance of OFDM systems is severely affected by the inphase and quadraure (IQ) imbalances of down converter modulators in receivers. In this paper, the effects of IQ imbalance on the performance of the OFDM systems with rectangular M-QAM constellations are investigated and a closed form of bit error rate (BER) of these systems in additive white Gaussian noise (AWGN) channels is derived. Theoretical results show perfect matching with those obtained by simulations and they can be used to derive the OFDM system performance, without the need to run extensive simulations.
Keywords :
OFDM modulation; error statistics; quadrature amplitude modulation; AWGN channels; BER; IQ Imbalance; M-QAM-OFDM systems; additive white Gaussian noise channels; bit error rate; down converter modulators; inphase and quadraure imbalances; AWGN; Baseband; Bit error rate; Digital audio broadcasting; Digital video broadcasting; Fading; OFDM modulation; Performance analysis; System performance; Wireless LAN; BER Performance; IQ imbalance; M-QAM modulation; OFDM; theoretical anallysis;
Conference_Titel :
Wireless and Optical Communications Networks, 2007. WOCN '07. IFIP International Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-1005-3
Electronic_ISBN :
1-4244-1005-3
DOI :
10.1109/WOCN.2007.4284141
