Patent ID: 7583748

Claim:
A method executed in a transmitter having two antennas comprising the steps of: developing a first block of N incoming signals, x a (n); developing a second block of N incoming signals, x b (n); at time frame k, transmitting signal x 1 k (n) over said first antenna and signal x 2 k (n) over said second antenna, where x 1 k (n)=x a (n) and x 2 k (n)=x b (n); and at time frame j≠k, transmitting signal x 1 j (n) over said first antenna and signal x 2 j (n) over said second antenna, where x 1 j (n)=− x 2 k ((−n) N ) and x 2 j (n)= x 1 k ((−n) N ), x 2 k is the complex conjugate of x 2 k , and (−n) N is (−n) modulo N.