Patent ID: 9749104
Date: 2017-08-29
CPC Classifications: H04B,H04L

Claim:
1. A multi-antenna OFDM transmitter having N antennas, N being an integer greater than or equal to two, the multi-antenna OFDM transmitter comprising: a multi-antenna encoder which, in operation, generates a plurality of data streams, one for each of the N transmit antennas, each data stream consisting of a succession of OFDM symbols, each OFDM symbol consisting of a plurality of OFDM cells, each OFDM cell being associated with one of a plurality of subcarriers; a non-transitory memory; and a processor coupled to the non-transitory memory, wherein the processor, in operation, generates, for each of the plurality of data streams, a plurality of scattered pilots, said plurality of scattered pilots being partitioned into M subsets, each of the scattered pilots being encoded on the basis of the subset to which the scattered pilot belongs and the data stream into which the scattered pilot is to be inserted, the processor, in operation, inserts, for each of the plurality of data streams, the plurality of scattered pilots into the data stream in accordance with a predetermined pilot allocation pattern, M is greater than or equal to N and satisfies a relationship M=M the insertion of the plurality of scattered pilots into the data stream is performed in such a manner that the scattered pilots of the same subset are allocated every M