SYSTEM AND METHOD FOR MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) RADIO COMMUNICATION

摘要

A system, method and device for MIMO radio communication of multiple signals between a first device (100) having N plurality of antennas (110) and a seco nd device (200) having M plurality of antennas (210). At the first device, a vector s representing L signals to be transmitted is processed with a transm it matrix A to maximize capacity of the channel between the first device and th e second device subject to a power constraint that the power emitted by each o f the N antennas is less than or equal to a maximum power. The power constrain t for each antenna may be the same for all antennas or specific or different f or each antenna. For example, the power constraint for each antenna may be equa l to a total maximum power emitted by all of the N antennas combined divided b y N. The transmit matrix A distributes the L signals among the N plurality of antennas for simultaneous transmission to the second device. At the second device, the signals received by the M plurality of antennas are processed wi th receive weights and the resulting signals are combined to recover the L signals.