An exact error probability analysis of OFDM systems with frequency offset

• Published in: IEEE transactions on communications Vol. 57; no. 1; pp. 26 - 31
• Main Authors: Dharmawansa, P., Rajatheva, N., Minn, H.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.01.2009; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Additive white noise; Applied sciences; AWGN; Binary phase shift keying; Bit error rate; Bit error rate (BER); Channels; Error analysis; Error probability; Errors; Exact sciences and technology; Fading; frequency offset; frequency selective fading; Gaussian; Information, signal and communications theory; Mathematical analysis; Modulation; Modulation, demodulation; Multiplexing; OFDM modulation; Offsets; Orthogonal Frequency Division Multiplexing; orthogonal frequency division multiplexing (OFDM); Performance analysis; Quadrature phase shift keying; Rayleigh fading; Signal and communications theory; symbol error rate (SER); Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Fading channels; Performance evaluation; AWGN; Error probability; Error estimation; Bit error rate; Rayleigh channels; Error rate; symbol error rate (SER); Binary phase shift keying; Bit error rate (BER); Quadrature phase shift keying; Selective fading; Accuracy; Frequency selection; Carrier frequency; Simulation; Analytical method; Orthogonal frequency division multiplexing; frequency selective fading; Frequency offset; Rayleigh fading; orthogonal frequency division multiplexing (OFDM); Symbol error rate
• ISSN: 0090-6778; 1558-0857
• DOI: 10.1109/TCOMM.2009.0901.060454

In this paper, we derive exact closed form bit error rate (BER) or symbol error rate (SER) expressions for orthogonal frequency division multiplexing (OFDM) systems with carrier frequency offset (CFO). We consider the performance of an OFDM system subject to CFO error in additive white Gaussian noise (AWGN), frequency flat and frequency selective Rayleigh fading channels. The BER/ SER performances of BPSK and QPSK modulation schemes are analyzed for AWGN and frequency-flat Rayleigh fading channels while BPSK is considered for frequency-selective Rayleigh fading channels. Our results can easily be reduced to the respective analytical error rate expressions for the OFDM systems without CFO error. Furthermore, the simulation results are provided to verify the accuracy of the new error rate expressions.