Spatial multiplexing wireless transmission system, spatial multiplexing wireless transmission method and computer program

摘要

A spatial multiplexing wireless transmission system is formed by a base station, and by a plurality of terminal stations that are provided with a plurality of antennas. The base station is provided with an information signal generating portion, a control signal generating portion, a transmission frame generating portion, a multiple beamforming portion, a transmission/reception switching portion, a reception signal processing portion, a propagation environment estimating portion, and an antenna information generating portion. At least one of the terminal stations is provided with a transmission/reception switching portion, a reception signal processing portion, a decoding portion, an antenna information extracting portion, an antenna information generating portion, an transmitting portion, a battery, a remaining battery detecting portion, a transmission request extracting portion, and a propagation environment estimating portion.

主权项

1. A spatial multiplexing wireless transmission system comprising:
a base station communicating with a plurality of terminal stations; and a first terminal station included in the plurality of terminal stations that comprises a plurality of antenna elements, wherein the base station comprises a first antenna information generating portion that, when data to be transmitted to the first terminal station is input from outside, generates antenna information showing which of the plurality of antenna elements is to be used to receive information signals, then attaches control signals including the antenna information to front of the information signals, and transmits the information signals to the first terminal via a transmitting/receiving portion, and wherein the first terminal station comprises: transmission/reception switching and reception processing portions provided for each of the plurality of antenna elements that switch between transmitting and receiving information signals, conduct a reception operation and conduct an extracting operation of the information signals and the control signals from reception signals received via corresponding antenna elements; and a control portion that receives the antenna information from the control signals, and based on the antenna information, selects at least one antenna element between the plurality of antenna elements which is to be used to receive information signals, and then sets the transmission/reception switching and reception processing portion corresponding to the selected antenna element to a receiving mode, sets a gain as same gain as when receiving the control signals if antenna elements which were not used for receiving the control signals are used for receiving the information signals, and sets the transmission/reception switching and reception processing portions that correspond to the antenna elements that were not selected to a non-receiving mode.