Multiple-symbol decision-feedback space-time differential decoding in fading channels
EURASIP Journal on Applied Signal Processing - Space-time coding and its applications - part I
EURASIP Journal on Wireless Communications and Networking - Special issue on advanced signal processing algorithms for wireless communications
Multiple-symbol decision-feedback space-time differential decoding in fading channels
EURASIP Journal on Applied Signal Processing
System performance of concatenated STBC and block turbo codes in dispersive fading channels
EURASIP Journal on Applied Signal Processing
Space-time-coded MIMO ZP-OFDM systems: semiblind channel estimation and equalization
IEEE Transactions on Circuits and Systems Part I: Regular Papers
A forward-backward Kalman filter-based STBC MIMO OFDM receiver
EURASIP Journal on Advances in Signal Processing
Performance study for STC-OFDM systems based on IEEE802.11a standard
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Coded DS-CDMA systems with iterative channel estimation and no pilot symbols
IEEE Transactions on Wireless Communications
Cooperation diversity scenarios for clipped OFDM with iterative destination node reception
WTS'10 Proceedings of the 9th conference on Wireless telecommunications symposium
IEEE Transactions on Wireless Communications
A symbol estimation scheme for Alamouti coded OFDM systems
MILCOM'03 Proceedings of the 2003 IEEE conference on Military communications - Volume II
On identification of FIR systems having quantized output data
Automatica (Journal of IFAC)
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We consider the design of iterative receivers for space-time block-coded orthogonal frequency-division multiplexing (STBC-OFDM) systems in unknown wireless dispersive fading channels, with or without outer channel coding. First, we propose a maximum-likelihood (ML) receiver for STBC-OFDM systems based on the expectation-maximization (EM) algorithm. By assuming that the fading processes remain constant over the duration of one STBC code word and by exploiting the orthogonality property of the STBC as well as the OFDM modulation, we show that the EM-based receiver has a very low computational complexity and that the initialization of the EM receiver is based on the linear minimum mean square error (MMSE) channel estimate for both the pilot and the data transmission. Since the actual fading processes may vary within one STBC code word, we also analyze the effect of a modeling mismatch on the receiver performance and show both analytically and through simulations that the performance degradation due to such a mismatch is negligible for practical Doppler frequencies. We further propose a turbo receiver based on the maximum a posteriori-EM algorithm for STBC-OFDM systems with outer channel coding. Compared with the previous noniterative receiver employing a decision-directed linear channel estimator, the iterative receivers proposed here significantly improve the receiver performance and can approach the ML performance in typical wireless channels with very fast fading, at a reasonable computational complexity well suited for real-time implementations