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A New Approach to Space-Time Coding through Gram-Schmidt Procedure

[ Vol. 11 , Issue. 4 ]


Jahangir Dadkhah Chimeh *   Pages 484 - 486 ( 3 )


Background: Referring to Space-Time Coding (STC) in wireless MIMO communication and Gram-Schmidt procedure, we introduce a new procedure in the symbol combiner of the receiver that detects the transmitted symbols straightforwardly and more easily than the heuristic procedure presented by Alamouti.

Methods: To find this combiner, we firstly project the vector of symbols in a two-dimensional orthonormal basis, Cartesian coordinate system, and make the computation in this coordinates.

Conclusion: Using the presented procedure, we obtain new capabilities to realize both the new combiner and a reasonable BER in the receiver.


Space-Time Coding, Gram-Schmidt, wireless communication, QPSK scheme, MIMO system model, MRCC.


Communication Technology Department, Iran Telecommunication Research Center, Tehran

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