Patent ID: 8744005
Filing Date: 2014-06-03
Classification: H04B,H04L,H04W

Abstract:
1. A method of generating modulation signals, the method comprising: generating a plurality of modulation signals each of which is to be transmitted from a different one of a plurality of antennas in an identical frequency band, wherein each modulation signal includes a pilot symbol sequence comprising a plurality of pilot symbols used for demodulation; inserting each of the pilot symbol sequences at the same temporal point in each modulation signal, wherein the pilot symbol sequences are orthogonal to each other with zero mutual correlation among the plurality of modulation signals, each pilot symbol having a non-zero amplitude, a quantity of the plurality of pilot symbols in each sequence being greater than a quantity of the plurality of modulation signals to be transmitted; and outputting the plurality of modulation signals, each comprising different transmission data and one of the pilot symbol sequences, to the plurality of antennas.