Radio signal receiving circuit detecting a synchronizing pattern
AssigneeOki Electric Industry Co., Ltd.
InventorKiyohiko Yamazaki
Life of this patent
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Abstract
A pulse generator is provided which operates as a counter capable of resetting a count according to an instruction signal for providing instructions for the detection of a synchronizing pattern from a previously received burst signal having some of continuous pseudo random patterns. The pulse generator performs counting up to timing provided to detect a synchronizing pattern of a burst signal having a continuous part of a pseudo random pattern to be consecutively received and thereby outputs a count-up signal CO similar to the instruction signal.
Claims20
A receiving circuit for measuring a bit error rate characteristic, comprising:
- a demodulator circuit demodulating a radio signal in a digital communication system that includes a burst signal and outputting the demodulated data therefrom;
- a detector which detects a synchronizing pattern included in the demodulated data and outputs an instruction signal for providing instructions for a result of the detection;
- a pulse generator capable of receiving the instruction signal and outputting a pulse signal each time a predetermined time elapses since the reception of the instruction signal;
- a control circuit which outputs control signals corresponding to at least either one of the instruction signal and the pulse signal;
- and
- a clock generator which generates a clock signal for storing and outputting a pseudo random pattern included in the demodulated data in response to the control signal.
A radio signal receiving circuit for measuring a bit error rate characteristic, comprising:
- a demodulator circuit demodulating a burst signal in a digital communication system that is included in a radio signal received by the demodulator circuit, the demodulator circuit outputting demodulated data;
- a detector detecting a synchronizing pattern signal from the demodulated data received thereto;
- a pulse generator generating a pulse signal in response to the synchronizing pattern signal;
- a control circuit generating a control signal in response to the synchronizing pattern signal and the pulse signal;
- a clock generator outputting a clock signal in response to the control signal;
- and
- a storing circuit storing and outputting a pseudo random pattern included in the demodulated data in response to the clock signal.
A radio signal receiving circuit for measuring a bit error rate characteristic, comprising:
- a demodulator circuit receiving a radio signal that includes a burst signal, the demodulator circuit generating demodulated data by demodulating the burst signal;
- a detector connected to the demodulator circuit, the detector outputting a synchronizing pattern signal detected from the demodulated data;
- a pulse generator connected to the detector, the pulse generator generating a pulse signal in response to the synchronizing pattern signal;
- a control circuit connected to the detector and the pulse generator, the control circuit outputting a control signal in response to the synchronizing pattern signal and the pulse signal;
- a clock generator connected to the control circuit, the clock generator generating a clock signal in response to the control signal;
- and
- a storing circuit connected to the demodulator and the clock generator, the storing circuit storing and outputting a pseudo random pattern included in the demodulated data in response to the clock signal.
Dependencies are inferred from the claim text.