Wireless communication apparatus and wireless communication method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorKenichi Miyoshi
Life of this patent
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Abstract
Likelihood determining section 111 calculates likelihood of hard decision data of a receive signal using pre-hard decision data of the received signal, and compares the calculated likelihood with a predetermined threshold 1. Switch control section 112 controls switch section 113 so that the section 113 outputs an error signal to weight control section 105 when reliability of the hard decision signal is high, corresponding to a determination signal from likelihood determining section 111. Weight control section 105 calculates a weight based on the error signal from switch section 113.
Claims9
A wireless communication apparatus comprising:
- a plurality of antennas;
- a first multiplier that multiplies a plurality of signals received though the plurality of antennas by respective weights provided for directional reception;
- an adder that adds the signals multiplied by the weights to obtain a received signal;
- a demodulator that performs a hard decision of the received signal to obtain hard decision data;
- and
- a controller that controls the weights,
- wherein the controller switches between updating and not updating the weights depending on a reliability of the hard decision data.
A wireless communication method comprising:
- (a) multiplying a plurality of signals received though a plurality of antennas by respective weights provided for directional reception;
- (b) adding the signals multiplied by the weights to obtain a received signal;
- (c) performing a hard decision of the received signal to obtain hard decision data;
- and
- (d) controlling the weights by switching between updating and not updating the weights depending on a reliability of the hard decision data.
Dependencies are inferred from the claim text.