Patent ID: 9154208
Filing Date: 2015-10-06
Classification: H04B,H04W

Abstract:
1. A method for providing wireless fixed access between an array of service antennas and a population of local terminals, comprising: obtaining channel state information (CSI) from transmissions by the local terminals, wherein at least some of the CSI is obtained by successive approximations using indications of signal-to-noise-and interference ratio (SINR) fed back from local terminals, the successive approximations including a first approximation of phase based on an estimate of amplitude and a second approximation of amplitude based on an estimate of phase, and wherein the CSI has fast-fading and slow-fading components between said array and said local terminals; beamform precoding messages destined for at least some of the local terminals using the CSI; allocating power for transmission from a multiple-antenna array to respective ones of the local terminals, wherein said allocating is performed using only slow-fading components of the CSI; and transmitting the precoded messages to the local terminals at the allocated power levels.