Patent ID: 9048899
Filing Date: 2015-06-02
Classification: H04B,H04L,H05K

Abstract:
1. A transmission method comprising: generating a first modulation signal s1 by using a first modulation scheme; generating a second modulation signal s2 by using a second modulation scheme; regularly switching between a plurality of precoding matrices for generating a first precoded signal z1 and a second precoded signal z2; generating the first precoded signal z1 and the second precoded signal z2 by applying one of the plurality of precoding matrices to the first modulation signal s1 and the second modulation signal s2; transmitting the first precoded signal z1 from one or more first antennas; and transmitting the second precoded signal z2 from one or more second antennas, the second antennas being different from the first antennas, wherein the first precoded signal z1 includes a first symbol and a second symbol that is adjacent to the first symbol in a frequency domain, the second precoded signal z2 includes a third symbol and a fourth symbol that is adjacent to the third symbol in the frequency domain, the first symbol and the third symbol are transmitted at a first frequency, the second symbol and the fourth symbol are transmitted at a second frequency, and a first precoding matrix for the first symbol and the third symbol and a second precoding matrix for the second symbol and the fourth symbol are different from each other.