Patent ID: 8331475
Filing Date: 2012-12-11
Classification: H04B,H04L

Abstract:
1. A method of detecting data in a received multiple input/multiple output signal, the received multiple input/multiple output signal having been transmitted by a transmitter over multiple spatial streams through a transmission channel, the method comprising: receiving a first signal on a first spatial stream and receiving a second signal on a second spatial stream, the first signal being associated with one or more first data values, the second signal being associated with one or more second data values; receiving a channel matrix representing combined effects of the transmission channel and spatial mapping of the transmitter on a transmitted signal; determining a distance value between the received second signal and each possible second data value, the determining of the distance value including: determining a log-likelihood ratio based on the determined distance value associated with each of the possible second data values; permutating the columns of the channel matrix by multiplying the channel matrix by a permutation matrix; determining a second distance value between the received first signal and each possible first data value, the determining for each possible first data value including: determining a second log-likelihood ratio based on the determined second distance value associated with each possible first data value; and decoding the one or more first data values based on the determined second log-likelihood ratio.