Joint transmitter receiver diversity for efficient space division multiaccess

Beamforming problem is studied in wireless networks where both transmitters and receivers have linear adaptive antenna arrays. Algorithms are proposed that find antenna array weight vectors at both transmitters and receivers as well as the transmitter powers with one of the following two objectives: 1) to maximize the minimum signal-to-interference-and-noise ratio (SINR) over all receivers and 2) to minimize the sum of the total transmitted power satisfying the SINR requirements at all links. Numerical study is performed to compare the network capacity and the power consumption among systems having different number of antenna array elements in a code division multiple access network.