Title :
Effect of phase noise and imperfect channel estimation on coded OFDM transmit diversity with application to IEEE 802.16e
Author :
Jalloh, Mohamed ; Das, Pankaj
Author_Institution :
Univ. of California, San Diego, CA
Abstract :
In this paper, we investigate the effects of RF impairments and imperfect channel estimation (ICE) on the performance of quadrature amplitude modulation (QAM) for orthogonal frequency division multiplexing (OFDM) systems employing transmit diversity with two transmit antennas and one receive antenna in a Rayleigh fading environment. We derive the bit error rate (BER) expressions of space-time block codes (STBC)-OFDM system using the Alamouti code. Although the analysis is presented for 16-QAM, it can be easily extended to higher order square QAM constellations. Simulation results are also presented to illustrate the extent of the effects on system performance degradation, with emphasis given to the IEEE 802.1e standard.
Keywords :
OFDM modulation; Rayleigh channels; block codes; channel estimation; diversity reception; error statistics; phase noise; quadrature amplitude modulation; space-time codes; Alamouti code; BER; IEEE 802.16e; QAM; RF impairment; Rayleigh fading; STBC-OFDM; bit error rate; coded OFDM transmit diversity; imperfect channel estimation; orthogonal frequency division multiplexing; phase noise; quadrature amplitude modulation; space-time block codes; Bit error rate; Channel estimation; Ice; OFDM; Phase noise; Quadrature amplitude modulation; Radio frequency; Rayleigh channels; Receiving antennas; Transmitting antennas;
Conference_Titel :
Signal Processing, 2008. ICSP 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2178-7
Electronic_ISBN :
978-1-4244-2179-4
DOI :
10.1109/ICOSP.2008.4697478
