Abstract— The problem of designing codes with close-tocapacity performance on the multiple-input multiple-output (MIMO) quasi-static fading channel (QSFC) is addressed. We consider three different coding schemes – namely, direct transmission of random-like codes, concatenation with linear processing orthogonal space-time block codes (o-STBC) and concatenation with space-time trellis codes (STTC...

We present an algorithm based on the closest point search (CPS) in lattices for decoding of space-time block codes (STBC). The modified CPS algorithm based on the Schnorr-Euchner variation of the Pohst method is used to perform the decoding of STBC. This method is shown to be substantially faster than other known sphere decoding methods. Also we exploit a fast method for decoding of orthogonal ...

Absfract-HIPERLAN/Z, SOZ.lla, s0Z.llg and HiSWANa Wireless Local Area Networks (WLANs) employ Coded Orthogonal Frequency Division Multiplexing (COFDM) and provide data rates of up to 54 Mhps in a ZOMHz bandwidth. lo this paper, space-time block coding (STBC) and spatial multiplexing MIMO techniques are considered as a means of enhancing the performance of COFDM WLANs. To perform channel estimat...

Orthogonal frequency division multiplexing (OFDM) has become a prevalent and widespread technique for the broadcast and transmission of signals over wireless channels and has been adopted in many wireless standards. OFDM may be united with antenna arrays at the transmitter and receiver side to enhance the diversity gain and to improve the system competence on time-variant and frequency-selectiv...

Weifeng Su and Xiang-Gen Xia. 2003. "On Space-Time Block Codes from Complex Orthogonal Designs", Wireless Personal Communications 25: 1–26. A. V. Geramita and J. Seberry. 1979. Orthogonal Designs, Quadratic Forms and Hadamard Matrices. Lecture Notes in Pure and Applied Mathematics, Vol. 43, Marcel Dekker: New York and Basel. V. Tarokh, H. Jafarkhani and A. R. Calderbank. 1999. "S...

A pre-coder is designed for orthogonal space-time block codes (OSTBCs) in multiple-input multiple-output (MIMO) channels. Unlike previous works, our pre-coder is the first to be designed to minimize the exact symbol error rate. In this paper, we show that OSTBCs can achieve full diversity and nearly strict orthogonality with a small amount of feedback bits returned from the receiver back to the...