Patent ID: 7792206

Claim:
A method comprising: forming at least two beams in a multi-beam antenna array, wherein a time delay is associated with at least one of the at least two beams and the beams are configured to transmit at least two space-time encoded signals, and wherein the at least two space-time encoded signals comprise a reference signal; delaying at least one of the space-time encoded signals so that the delayed space-time encoded signal arrives at a remote station at the same time as the reference signal; encoding each signal of the at least two space-time encoded signals with a signature code; forming the reference signal from one of the at least two space-time encoded signals; and transmitting the reference signal and the at least one delayed space-time encoded signal via the at least two beams, wherein the reference signal and the at least one delayed space-time encoded signal are configured such that channel state information is determined based on the received reference signal and the received at least one delayed space-time encoded signal and, once determined, the channel state information is segmented into a plurality of channel state information segments.