Low-complexity Turbo-equalization for diversity channels
Signal Processing
A pilot-based fast algorithm for joint estimation of frequency offset and channel in OFDM
Signal Processing - Fractional calculus applications in signals and systems
Low-Complexity Block Turbo Equalization for OFDM Systems in Time-Varying Channels
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
Joint CFO and Channel Estimation for Multiuser MIMO-OFDM Systems With Optimal Training Sequences
IEEE Transactions on Signal Processing - Part II
Linear turbo equalization analysis via BER transfer and EXIT charts
IEEE Transactions on Signal Processing - Part I
Carrier Frequency Offset Mitigation in Asynchronous Cooperative OFDM Transmissions
IEEE Transactions on Signal Processing
An approximately MAI-free multiaccess OFDM system in carrier frequency offset environment
IEEE Transactions on Signal Processing
Optimal decoding of linear codes for minimizing symbol error rate (Corresp.)
IEEE Transactions on Information Theory
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Turbo receivers have been widely studied and used in the field of iterative signal processing. In this paper, a novel turbo receiver combined with multiuser carrier frequency offset (CFO) compensation in frequency-domain is proposed for orthogonal frequency division multiple access (OFDMA) uplink. Based on the principle of frequency-domain turbo equalization, the proposed turbo receiver jointly performs soft interference cancellation (SIC)-based CFO compensation in frequency-domain, minimum mean square error (MMSE)-based frequency-domain equalization and maximum a posteriori (MAP)-based decoding in an iterative fashion. Analysis and simulation results show that the proposed turbo receiver which exploits soft-decision feedback derived from decoders provides better frequency synchronization and bit error rate (BER) performance than the non-iterative receivers which employ conventional equalization and decoding without decision feedback. Moreover, the proposed turbo receiver achieves better BER performance, faster convergence rate and lower complexity than some existing turbo receivers for OFDMA uplink.