Multiple-input multiple-output wireless communications with full duplex radios

摘要

An apparatus used in a full duplex multiple-input multiple-output (MIMO) wireless communications system is disclosed. In an aspect, the apparatus includes a plurality of antennas, each of which is connected to a combination of at least a TX (transmit) RF (radio frequency) chain and an RX (receive) RF chain. The plurality of antennas are split into one or more transmit antennas and one or more receive antennas, and the apparatus communicates with another apparatus. Other apparatuses and some methods for wireless communications also are disclosed.

主权项

1. An apparatus used in a single-channel full duplex multiple-input multiple-output (MIMO) wireless communications system, the apparatus comprising:
a plurality of antennas, each of which is connected to a combination of at least a TX (transmit) RF (radio frequency) chain and an RX (receive) RF chain, wherein the plurality of antennas are split into one or more transmit antennas and one or more receive antennas, wherein the apparatus communicates with another apparatus, wherein the antenna splitting is performed so that capacity gain is maximized, and wherein the capacity gain is given by the following formula:ɛ⁢{GFD}≈{(M-M1)+(N-N1)0.5⁢(M+N)=2-2⁢N1+M1N+Mρ⁢⁢<<1min⁡(N1,M-M1)+min⁡(N-N1,M1)min⁡(N,M)ρ>>1 where GFD is the capacity gain, ε{ } is an expectation operator or statistical average, p represents an average SNR (signal to noise ratio), M and N are the numbers of antennas at the apparatus and said another apparatus, respectively, and M1 and N1 are the numbers of transmit antennas at the apparatus and said another apparatus, respectively.