Patent ID: 6636493
Filing Date: 2003-10-21
Classification: H01Q,H04B,H04W

Abstract:
A radio apparatus comprising:a receiver, having receiving directivity for performing path division multiple access with a plurality of terminal units, for separating a received signal from one of said terminal units from a received radio signal, said receiver including: a plurality of received signal separators multiplying said received radio signal by a received weight vector corresponding to each said terminal unit thereby extracting said received signal, and received strength measuring means for measuring received radio strength of each said terminal unit; and a transmitter, having transmission directivity for performing said path division multiple access, for generating a transmit signal having directivity to said specific terminal unit, said transmitter including: a plurality of transmit signal generators multiplying a transmit signal by a transmit weight vector obtained by weighting said received weight vector for each said terminal unit in response to said received radio strength from said received radio strength measuring means thereby generating said transmit signal having directivity, wherein said received radio strength from said received radio strength measuring means corresponds to all the terminal units accessing said radio apparatus through said path division multiple access.