Patent ID: 6845244
Filing Date: 2005-01-18
Classification: H01Q,H04B,H04W

Abstract:
1. A directivity control type communication apparatus, comprising: a directional reception section that receives a multiplexed signal transmitted under multipath phenomenon, while controlling a reception directivity, and demodulates a signal for each of a plurality of paths; a buffer that stores information indicative of a previous reception condition in a communication apparatus of a communication partner previously transmitted from said communication apparatus of the communication partner; a transmission path determination section that determines a signal transmission path by referring to the information indicative of said previous reception condition stored in said buffers; a selection section that selects, from among reception directivity information for each of said plurality of paths, reception directivity information for the signal transmission path determined by said transmission path determination section; and a directional transmission section that forms a transmission radiation pattern based on the reception directivity information outputted from said selection section to perform directional transmission.