Patent ID: 8526528
Filing Date: 2013-09-03
Classification: H04B

Abstract:
1. A communication system, comprising: transmission baseband circuitry configured to produce first and second baseband signals having a first beamforming phase offset therebetween, the first baseband signal including a first sequence of first pilot symbols, and the second baseband signal including a second sequence of second pilot symbols, each first pilot symbol being configured to be transmitted concurrently with a corresponding second pilot symbol, wherein at least one of the first sequence and the second sequence includes a first interleaved sub-sequence of interleaved pilot symbols and a second interleaved sub-sequence of interleaved pilot symbols, each of the interleaved pilot symbols in the first interleaved sub-sequence having a first phase offset relative to another interleaved pilot symbol in the first interleaved sub-sequence, and each of the interleaved pilot symbols in the second interleaved sub-sequence having a second phase offset relative to another interleaved pilot symbol in the second interleaved sub-sequence, the first phase offset being different than the second phase offset.