Patent ID: 6965762
Filing Date: 2005-11-15
Classification: H01Q,H03G,H04B,H04L,H04W

Abstract:
1. A radio communication device comprising: a. N plurality of antennas; b. a baseband signal processor that generates transmit signals and that recovers data from receive signals; and c. a radio transceiver coupled to the baseband signal processor that upconverts the transmit signals for transmission via N plurality of antennas and downconverts signals received by the N plurality of antennas to produce receive signals; d. wherein the baseband signal processor applies a transmit antenna vector to weight a baseband signal to be transmitted simultaneously from each of N plurality of antennas, the transmit antenna weight vector comprising a complex transmit antenna weight for each of the N plurality of antennas, wherein each complex transmit antenna weight has a magnitude and a phase whose values may vary with frequency across a bandwidth of the baseband signal, thereby generating N transmit signals each of which is weighted across the bandwidth of the baseband signal such that at substantially all frequencies of the baseband signal, the sum of the power of the transmit signals across the N plurality of antennas is equal to a constant.