Patent ID: 8320849

Claim:
A transmission control method comprising: providing data to be transmitted through a plurality of antennas using regions defined by frequency and time axes; providing the data to be transmitted with a delay that is constant along a portion of the frequency axis, wherein every delay for each antenna is provided based on utilizing the cyclic delay diversity; providing an initial phase to the data by applying a first initial phase process, a second initial phase process, or the first initial phase process and the second initial phase process, wherein said first initial phase process includes: providing the data to be transmitted with an initial phase that is variable along the portion of the frequency axis from one of a plurality of initial phases for each of the regions such that the initial phase of each of the regions is different from the initial phase of at least another of the regions, and said second initial phase process includes: providing a first initial phase to the data to be transmitted by at least one antenna of the plurality of antennas, and providing a second initial phase to the data to be transmitted by an antenna of the plurality of antennas, wherein the first initial phase is a phase different from the second initial phase, and wherein said delay and said initial phase are provided together.