A Low Complexity Two Stage MMSE-Based Receiver for Single-Carrier Frequency-Domain Equalization Transmissions over Frequency-Selective Channels

In this paper, we propose a novel low complexity two-stage minimum mean square error (MMSE)-based receiver for single carrier frequency-domain equalization (SC-FDE) for space-time block coded (STBC) transmissions over frequency selective channels. We demonstrate that the proposed receiver enjoys a remarkably simple decoding scheme. We further show that, by incorporating linear processing techniques, our MMSE-based receiver is able to collect full antenna and multipath diversity gains, while maintaining low complexity, thus, eliminating the need for maximum-likelihood sequence detection (MLSD), which has certainly prohibitive complexity, specially, when the constellation size of the transmitted signals and/or the block length increases. Simulation results demonstrate that our proposed receiver significantly outperforms the conventional SC-MMSEFDE receiver, while maintaining nearly similar complexity.

[1]  Hikmet Sari,et al.  Transmission techniques for digital terrestrial TV broadcasting , 1995, IEEE Commun. Mag..

[2]  Naofal Al-Dhahir,et al.  Overview and comparison of equalization schemes for space-time-coded signals with application to EDGE , 2002, IEEE Trans. Signal Process..

[3]  R. Kalbasi,et al.  Single-carrier frequency domain equalization , 2008, IEEE Signal Processing Magazine.

[4]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[5]  Rui Dinis,et al.  Iterative layered space-time receivers for single-carrier transmission over severe time-dispersive channels , 2004, IEEE Communications Letters.

[6]  A. Robert Calderbank,et al.  Space-Time block codes from orthogonal designs , 1999, IEEE Trans. Inf. Theory.

[7]  G.B. Giannakis,et al.  Space-time coding with maximum diversity gains over frequency-selective fading channels , 2001, IEEE Signal Processing Letters.

[8]  M. V. Clark Adaptive frequency-domain equalization and diversity combining for broadband wireless communications , 1998, VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151).

[9]  R. Dinis,et al.  Hybrid time-frequency layered space-time receivers for severe time-dispersive channels , 2004, IEEE 5th Workshop on Signal Processing Advances in Wireless Communications, 2004..

[10]  Naofal Al-Dhahir,et al.  Single-carrier frequency-domain equalization for space-time block-coded transmissions over frequency-selective fading channels , 2001, IEEE Communications Letters.

[11]  Fabrizio Pancaldi,et al.  Frequency-domain equalization for space-time block-coded systems , 2005, IEEE Transactions on Wireless Communications.

[12]  Martin V. Clark Adaptive frequency-domain equalization and diversity combining for broadband wireless communications , 1998, IEEE J. Sel. Areas Commun..

[13]  Per Ola Börjesson,et al.  OFDM channel estimation by singular value decomposition , 1996, Proceedings of Vehicular Technology Conference - VTC.

[14]  Murat Uysal,et al.  Three space-time block-coding schemes for frequency-selective fading channels with application to EDGE , 2001, IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211).

[15]  Gerard J. Foschini,et al.  Layered space-time architecture for wireless communication in a fading environment when using multi-element antennas , 1996, Bell Labs Technical Journal.

[16]  Mendoza Freedie Damasco. Simple transmit diversity technique for wireless communications , 2003 .