Near-optimal low-complexity decoding of space-time codes for fixed wireless applications
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United States of America Patent
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May 15, 2012
Grant Date -
Jul 16, 2009
app pub date -
Mar 24, 2009
filing date -
Dec 23, 1997
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Abstract
An improved multi-antenna receiver is realized for detecting signals transmitted by a multi-antenna transmitter by summing signals received at the plurality of receiver antennas after multiplying each by a respective constant. The summed signal is applied to a maximum likelihood detector. The respective constants, λj, where j is an index designating a particular receiver antenna, are determined by evaluating the largest eigenvector of the matrix A, where Λ is a vector containing values λj, and A is a matrix containing elements αij, which is the transfer function between the ith transmitter antenna to the jth receiver antenna. The αij terms are determined in the receiver in conventional ways.
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