Patent ID: 7756218
Filing Date: 2010-07-13
Classification: H04B,H04L,H04W

Abstract:
1. A wireless transmission system in which a plurality of wireless stations are each capable of signal transmission to a receiving station, wherein a path diversity system is formed by at least one of the wireless stations that is capable of signal transmission, a multi-path channel and the receiving station, the wireless transmission system comprising: a transmission timing control section for determining a transmission start timing at which to start transmission of a signal from each of the wireless stations, the transmission start timing being a timing obtained by delaying a reference timing for the transmission of the signal by a predetermined delay amount for each of the wireless stations; a transmitting section for transmitting signals at the transmission start timing determined by said transmission timing control section; and a receiving section provided in the receiving station for receiving the transmitted signals, wherein the predetermined delay amount is determined so that: 1) the signals are received by said receiving section at a plurality of signal-receiving timings; 2) a number of signal-receiving timings is less than or equal to a predetermined maximum number of effective branches; 3) a difference between the plurality of signal-receiving timings is greater than or equal to a predetermined delay resolution; 4) and a difference between a maximum value and a minimum value of the plurality of signal-receiving timings is less than or equal to a predetermined maximum delay, and when a number of wireless stations transmitting the signals is larger than the predetermined maximum number of effective branches, the number of signal-receiving timings at which the receiving station receives signals is made equal to the predetermined maximum number of effective branches.