Patent ID: 9628300
Date: 2017-04-18
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method of transmitting 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, wherein each modulation signal includes a pilot symbol sequence and/or a pilot subcarrier including a plurality of pilot symbols used for demodulation; inserting each of the pilot symbol sequences and/or pilot subcarriers at a same temporal point in each modulation signal, wherein the pilot symbol sequences and/or pilot subcarriers are orthogonal to each other, each pilot symbol having a non-zero amplitude, a quantity of the plurality of pilot symbols in each pilot symbol sequence and/or pilot subcarrier being greater than a quantity of the plurality of modulation signals to be transmitted; and transmitting in an identical frequency band the plurality of modulation signals, each including different transmission data and one of the pilot symbol sequences and/or pilot subcarriers, from the plurality of antennas.