US 7,116,942 B2Granted

Radio communication apparatus and method of controlling the same

AssigneeKabushiki Kaisha Toshiba

InventorJun Hasegawa

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Abstract

A radio communication apparatus includes a radio signal processing section which produces a first signal. A power calculation section produces a power value signal of the first signal. A correlation detection section produces correlative value signals corresponding to a correlation between the first signal and a known signal. A first and a second detection section detect a beginning of the reception signal, using the power value signal and the correlative value signal respectively. The first and the second detection section respectively produce a first detection and a second detection signal, each of which include information of a beginning timing of the reception signal. A select control section is supplied with the first and the second detection signals and selectively outputs one of them. A demodulation section demodulates a data signal from the first signal using an output signal from the select control section.

Claims26

Dependent claims

A radio communication apparatus comprising:

an antenna which receives a radio signal and outputs the same as a reception signal;
a radio signal processing section which frequency-converts and amplifies the reception signal and produces a first signal;
a power calculation section which calculates a power value of the first signal and produces a power value signal;
a first detection section which detects a beginning timing of the reception signal using the power value signal, and produces a first detection signal including information of the beginning timing of the reception signal in accordance with the detection result;
a correlation detection section which produces a correlative value signal in accordance with correlation between the first signal and a known signal;
a second detection section which detects a beginning timing of the reception signal using the correlative value signal, and produces a second detection signal including information of the beginning timing of the reception signal in accordance with a detection result;
a select control section which is supplied with the first detection signal and the second detection signal and selectively outputs one of the first detection signal and the second detection signal;
and
a demodulation section which demodulates a data signal from the first signal using an output signal from the select control section.

6 more elements

A control method for a radio communication apparatus, comprising:

frequency-converting and amplifying a reception signal received by an antenna and producing a first signal;
calculating a power value of the first signal and producing a power value signal;
detecting a beginning timing of the reception signal using the power value signal, and producing a first detection signal including information of the beginning timing of the reception signal in accordance with the detection result;
producing a correlative value signal in accordance with correlation between the first signal and a known signal;
detecting a beginning timing of the reception signal using the correlative value signal, and producing a second detection signal including information of the beginning timing of the reception signal in accordance with a detection result;
selectively outputting one of the first detection signal and the second detection signal;
and
demodulating a data signal from the first signal using one of the first detection signal and the second detection signal.

5 more elements

Dependencies are inferred from the claim text.