SAMPLING DEVICE AND METHOD IN WIRELESS COMMUNICATION SYSTEM

• US 20100150219A1
• Filed: 08/28/2009
• Published: 06/17/2010
• Est. Priority Date: 12/11/2008
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Park, Joo Ho, Kil, Min Su, Kim, Jae Young, Oh, Jung-yeol, Oh, Mi-Kyung
• Application Number:
  US12/549,864
• Publication Number:
  US 20100150219A1
• Time in Patent Office: Days
• US Class Current: 375/228
• CPC Class Codes: G01S 13/765 with exchange of information between interrogator and responder
• CPC Class Codes: H04L 7/0041 Delay of data signal
• CPC Class Codes: H04L 7/042 Detectors therefor, e.g. correlators, state machines digital correlators in general G06F17/15

Abstract

The exemplary embodiment of present invention provides a sampling device and method in a wireless communication system that is capable of precisely measuring a distance by combining data blocks passing through at least two delay paths and performing sampling thereon.

To this end, the sampling device includes: a delayer that delays received signals in a block unit; a delay path selector that selects any one of a plurality of delay paths to control the delayer to apply the selected delay path to each block; a sampler that performs sampling for each block delayed by the delayer; a signal processor that combines at least two sampling blocks sampled by the sampler; and a timing tracker that tracks reception timing of the combined signal, wherein the delayer includes at least two selectable delay paths.

Claims

1. A sampling device in a wireless communication system, comprising:

a delayer that delays received signals in a block unit;

a delay path selector that selects any one of a plurality of delay paths to control the delayer to apply the selected delay path to each block;

a sampler that performs sampling for each block delayed by the delayer;

a signal processor that combines at least two sampling blocks sampled by the sampler; and

a timing tracker that tracks reception timing of the combined signal.

2. The sampling device in a wireless communication system of claim 1, wherein each of the plurality of delay paths is independently implemented with respect to predetermined delay values.

3. The sampling device in a wireless communication system of claim 1, wherein the plurality of delay paths are implemented in a manner that disposes delay paths having the longest delay values at a predetermined interval and then connects delay paths having smaller delay values by a tab at the middle of the delay paths disposed at the predetermined interval.

4. The sampling device in a wireless communication system of claim 1, wherein the delay path selector uses a predetermined selection pattern to control the delay path selection of the delayer.

5. The sampling device in a wireless communication system of claim 1, wherein the delay path selector controls the delay path selection of the delayer according to external selection control signals.

6. The sampling device in a wireless communication system of claim 1, wherein the timing tracker controls timing tracking granularity in consideration of the delay paths selected by the delayer.

7. The sampling device in a wireless communication system of claim 6, wherein the timing tracker controls to perform timing tracking update in the combined sampling block unit when oversampling is performed by a sampling combination of the signal processor.

8. The sampling device in a wireless communication system of claim 6, wherein the timing tracker determines a performance position of the timing tracking update by comparing generation positions of oversampling by using the delay values of the delayer as correction parameters when the oversampling is performed by the sampling combination of the signal processor.

9. The sampling device in a wireless communication system of claim 1, wherein the signal processor performs N-times oversampling while combining the sampling block, and the delay path selector controls the delayer to select the delay paths having delay values closest to a 1/N sampling period when the N-times oversampling is performed.

10. A sampling method in a wireless communication system of allowing a receiver to sample signals, comprising:

delaying the received signal in a block unit when the reception of the signal is detected;

sampling on each delayed block, combining at least two sampled blocks; and

tracking reception timing of the combined signal.

11. The sampling method in a wireless communication system of claim 10, wherein each block of the received signal is delayed through any one delay path selected from the plurality of delay paths.

12. The sampling method in a wireless communication system of claim 11, wherein the tracking of the reception timing controls timing tracking granularity in consideration of the delay paths selected.