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Timing follow-up and capture method of timing follow-up system based on serial interference elimination

A technology of serial interference elimination and timing tracking, applied in the field of timing synchronization acquisition and tracking, it can solve the problems of large interference and easy failure of timing capture, and achieve the effect of overcoming large interference.

Active Publication Date: 2007-04-25
XUANPU INDUSTRY CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The timing tracking and capture method of a timing tracking system based on serial interference elimination provided by the present invention can overcome the defects of the prior art that the interference is large and the timing capture is easy to fail in the same frequency environment

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  • Timing follow-up and capture method of timing follow-up system based on serial interference elimination
  • Timing follow-up and capture method of timing follow-up system based on serial interference elimination
  • Timing follow-up and capture method of timing follow-up system based on serial interference elimination

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Embodiment approach

[0141] As shown in Figure 1, it is a flow chart of the timing tracking and capturing method based on the timing tracking system of serial interference elimination in the time division synchronous code division multiple access communication system provided by the present invention, which comprises the following steps:

[0142] Step 1, multi-cell channel estimation based on serial interference cancellation: use the training sequence to estimate the channel situation of the receiving channel, and obtain the modulus p(k) of the channel estimation;

[0143] Step 2, multi-cell channel estimation filtering;

[0144] Step 3, multi-cell effective path search;

[0145] Step 4, multi-cell (virtual) timing estimation window calculation;

[0146] Step 5, timing tracking point calculation;

[0147] Step 6, multi-cell joint timing adjustment command output;

[0148] Step 7, timing tracking stability judgment.

[0149] As shown in Fig. 3, described step 1 can adopt serial interference can...

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Abstract

The invention relates to a method for timely tracking and catching in timely track system, based on serial interference elimination. Wherein, it comprises that: 1, multi-region channel evaluation based on serial interference elimination; 2, multi-region channel evaluation filter; 3, multi-region effective path search; 4, multi-region (virtual) timely evaluation window calculation; 5, timely tracking point calculation; 6, multi-region coupled timely adjustable command output; 7, timely track stability judgment. The invention can effectively overcome the interference of same-frequency receiving condition, to improve the accuracy of timely adjustment caused by high channel decrease.

Description

technical field [0001] The invention relates to a timing tracking and capturing method of a timing tracking system based on serial interference elimination in a time division synchronous code division multiple access communication (TD-SCDMA) system. Specifically, it relates to a timing synchronization acquisition and tracking method based on serial interference cancellation in a co-frequency receiving environment. Background technique [0002] In the receiving device of Time Division Synchronous Code Division Multiple Access (TD-SCDMA), in order to obtain good receiving effect, it is necessary to obtain accurate chip timing and symbol timing. Since the receiving device is in the process of constant movement and the wireless channel conditions are constantly changing, it is necessary for the timing tracking system of the receiving device to continuously track the change of the receiving timing of the system. The timing tracking system will detect the changes of the wireless ...

Claims

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Application Information

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IPC IPC(8): H04J3/06H04B7/26
Inventor 王炳立谢一宁
Owner XUANPU INDUSTRY CO LTD
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