KR960039712A

KR960039712A - Synchronous stage of wireless receiver, timing recovery of burst and frequency estimation method

Info

Publication number: KR960039712A
Application number: KR1019960011752A
Authority: KR
Inventors: 안드르지 블래시아크 다리우스즈
Original assignee: 죠나단 피. 메이어; 모토롤라, 인크.
Priority date: 1995-04-19
Filing date: 1996-04-18
Publication date: 1996-11-25
Also published as: GB9607879D0; DE19609504A1; JPH08307408A; GB2300093B; BR9601239A; CN1139321A; AU4574596A; GB2300093A

Abstract

본 발명의 주파수 및 버스트 검출기(140)는 신호 수신기에서 버스트의 위치와 주파수를 검출한다. 자동 상판회로(210)는 수신된 버스트의 실수부와 허수부의 복소 공액을 나타내는 자동 상관 계량을 제공한다. 예기된 버스트의 임펄스 응답 특성을 갖는 상기 필터(220)는 자동 상관 계량을 필터한다. 피크 검출기(230)는 필터된 신호의 피크를 검출하여 정밀치 않은 타이밍 기준을 제공한다. 검출된 피크와 상관 필터의 출력에 응답하여 주파수 추정기(240)는 버스트의 주파수 추정치를 제공한다.The frequency and burst detector 140 of the present invention detects the position and frequency of the burst at the signal receiver. Automatic topology circuit 210 provides an autocorrelation metric that represents the complex conjugate of the real and imaginary parts of the received burst. The filter 220 having the impulse response characteristic of the expected burst filters the autocorrelation metric. Peak detector 230 detects peaks in the filtered signal to provide an imprecise timing reference. In response to the detected peak and the output of the correlation filter, the frequency estimator 240 provides a frequency estimate of the burst.

Description

Synchronous stage of wireless receiver, timing recovery of burst and frequency estimation method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명에 따른 무선 수신기의 블록선도, 제2도는 본 발명에 따라 수신된 버스트의 주파수 및 옵셋을 추정하는 무선수신기의 동기단에 대한 일실시예의 블록선도, 제3도 및 제4도는 본 발명에 따른 자동 상관 회로의 블록선도, 제5도 및 제6도는 본 발명에 따른 상관 필터의 블록선도, 제7도 및 제8도는 본 발명에 따른 피크검출기의 블록선도, 제9도는 본 발명에 따른 주파수 추정기의 블럭선도.1 is a block diagram of a radio receiver according to the invention, FIG. 2 is a block diagram of an embodiment of a synchronization stage of a radio receiver for estimating the frequency and offset of a received burst according to the invention, 5 and 6 are block diagrams of a correlation filter according to the present invention, FIG. 7 and FIG. 8 are block diagrams of a peak detector according to the present invention, FIG. 9 is a block diagram of an automatic correlation circuit according to the present invention Fig. 3 is a block diagram of a frequency estimator according to the present invention;

Claims

A synchronization stage of a wireless receiver for recovering the timing of a received burst and estimating a frequency, comprising: an autocorrelation circuit for providing an autocorrelation metric indicative of a combination of the autocorrelation sequence lag of the received burst Correlation filter 220 having an impulse response that resembles the magnitude and duration of the expected burst and is operatively coupled to the autocorrelation circuit 210 to filter the autocorrelation metric to provide a filtered signal, A peak detector (230) operatively coupled to the correlation filter for detecting a peak of the filtered signal and providing a coarse timing signal; and a phase detector operatively coupled to the peak detector and the correlation filter And a frequency estimator (240) for estimating the frequency of the burst according to the filtered signal and the non-precise timing signal, Of the radio receiver.

The method of claim 1, wherein the correlation filter (220) comprises an infinite impulse response filter, the impulse response of which has a selected tap to indicate the magnitude and duration of the expected burst Characterized in that the synchronization stage of the radio receiver.

2. The method of claim 1, wherein the correlation filter (220) comprises an infinite impulse response filter, the impulse response of which has a selected tap to indicate the magnitude and duration of the expected burst Characterized in that the synchronization stage of the radio receiver.

3. The receiver of claim 1, wherein the autocorrelation circuit (210) comprises a delay path for receiving the burst and providing an autocorrelation metric of the real and imaginary parts of the burst according to the delayed burst. only.

2. The synchronization stage of claim 1, wherein the peak detector (230) comprises magnitude circuitry operatively coupled to the correlation filter to determine the magnitude of the filtered signal.

6. The synchronization stage of claim 5, wherein the peak detector (230) further comprises a maximum detector operatively coupled to the magnitude circuit to select a maximum magnitude of the filtered signal.

6. The synchronization stage of claim 5, wherein the peak detector (230) further comprises a pattern match detector operatively coupled to the magnitude circuit to pattern match the shape of the filtered signal magnitude.

The synchronization stage of claim 1, wherein the synchronization stage further comprises an RF stage (110) of the radio receiver and an antenna (100).

CLAIMS What is claimed is: 1. A method for recovering timing of a time offset of a received burst and estimating a frequency comprising: (a) generating an autocorrelation metric representing a combination of the autocorrelation sequence delays of the received burst; (220) for filtering the autocorrelation metric using a filter having an impulse response resembling the magnitude and duration of the expected burst, and (c) detecting a peak of the filtered signal (D) providing (240) estimating the frequency of the burst in accordance with the filtered signal and the imprecise timing signal. &Lt; RTI ID = 0.0 > Timing recovery and frequency estimation method of bursts.

※ Note: It is disclosed by the contents of the first application.