Abstract
The complexity of exhaustive search decoding technique grows exponentially with size of transmitted data. This paper proposes lattice sphere decoding technique with optimum performance and lower complexity. A linear system with a relatively small condition number is well-conditioned, so errors are not amplified significantly. In this paper, orthonormal basis of channel matrix has been used, hence the condition number is 1 which is the minimum. The proposed technique achieves significant performance improvement with huge complexity reduction.
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