Title :
Effects of frequency-offset on the performance of OFDM systems
Author :
Jie, Zhang ; Yun, Zhou ; Ling, Su ; Ping, Zhang
Author_Institution :
Wireless Tech. Innovation Lab., Beijing Univ. of Posts & Telecommun., China
Abstract :
Orthogonal frequency division multiplexing (OFDM) is orders of magnitude more sensitive to frequency offset than single-carrier systems. Frequency offset reduces the signal power and destroys orthogonality among subcarriers leading to the intercarrier interference (ICI). It is necessary to analyze how the frequency offset affects the performance of OFDM systems. This paper analyzes the relation between frequency offset, bit-error-rate (BER) and the channel capacity of each subcarrier based on the approximate degradation in signal-to-ICI-noise (SINR) caused by frequency offset. At last, some simulation figures are also given out.
Keywords :
OFDM modulation; channel capacity; error statistics; radiofrequency interference; BER; OFDM systems; bit error rate; channel capacity; frequency offset; intercarrier interference; orthogonal frequency division multiplexing; signal power; signal-to-ICI-noise ratio; Bit error rate; Fading; Interference; OFDM modulation; Performance analysis; Radio transmitters; Signal analysis; Signal to noise ratio; Technological innovation; Wireless sensor networks;
Conference_Titel :
Communication Technology Proceedings, 2003. ICCT 2003. International Conference on
Print_ISBN :
7-5635-0686-1
DOI :
10.1109/ICCT.2003.1209705
