A timing rough synchronization capturing method for mobile multimedia broadcast system

Abstract

The invention discloses a timing coarse synchronization acquisition method of a mobile multimedia broadcasting system, which utilizes exactly the same signal segment in each time slot of a physical frame, adopts a delay correlation method, searches for a correlation peak within a certain range, and then obtains a receiver timing coarse synchronization estimate. In order to make the coarse synchronization result more stable and reliable, the prediction of the synchronization result of the current time slot can obviously reduce the occurrence probability of outliers in the timing coarse synchronization result and improve the accuracy of timing acquisition of the receiver. The synchronous acquisition method of the present invention has the characteristics of flexible design, small amount of calculation for synchronous search, high precision of synchronous acquisition results, good stability of the receiver system, etc., and completely avoids complex modulo and division operations, and can be conveniently adopted by hardware or software way to achieve.

Description

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AI Technical Summary

Benefits of technology

This patented technique uses delayed correlation techniques (C), correlated values that carry frequencies offsets from each other, simplifies calculations methods, improves stability over long periods of operation at lower cost than traditional searching algorithms, allows for precise synchronized reception within less complicated equipment while maintaining accuracy. Additionally, this approach avoids performing expensive computations on both high precision clock sources used in older devices and low-cost crystals. Overall, it provides an efficient way to accurately locate and track mobile multimedia content transmitting stations during their transmission process without requiring excessive computational resources.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the efficiency at transmitting data over radio communication networks by optimizing both time division multiplexing (TDD), orthogonal Frycoding (OFTC). Time alignment techniques are used during TDD operation but they have drawbacks such as slow convergence times or complex calculations that require expensive equipment.

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