Patent ID: 9036461
Filing Date: 2015-05-19
Classification: H04B,H04J,H04L

Abstract:
1. A method, comprising: receiving a first input that includes signals transmitted by M transmit antennas on C channels and received by N receive antennas, M, N and C each being a positive integer greater than 1; receiving a second input that includes estimates of channel matrix elements; and generating an output that includes at least an estimate of a transmit signal transmitted by one of the M transmit antennas on one of the C channels based at least in part on the first and the second inputs, wherein, when M=2 and N=2, generating an output that includes at least an estimate of a transmit signal transmitted by one of the M transmit antennas on one of the C channels comprises generating the output according to an algorithm expressed as follows: wherein: and wherein: s=detected frequency domain signal; s*=complex conjugate mathematical operation of s; r(k,q)=the received signal on carrier (2i+q−1) and receiver port number (k−1) for 1≦k≦2 and 1≦q≦2; and h(k,q)=the channel path transmission scaling factor in the frequency domain at carrier frequencies 2i, 2i+1, 2i+2, and 2i+3 for the port (q−1) transmitter to the port (k−1) receiver for 1≦k≦2 and 1≦q≦2.