Method and system for link synchronization in an lte-tdd architecture

Abstract

A method of detecting a synchronization switching pulse using a power detector in a time division duplexing (TDD) system includes receiving an input signal, detecting a power level associated with the input signal using a digital power meter, and determining a configuration associated with the input signal. The method also includes determining that a pulse width associated with the input signal is greater than a threshold, determining an offset associated with a special subframe configuration, and generating an estimated sync pulse. The method further includes forming a regenerated sync pulse, determining an error between the estimated sync pulse and the regenerated sync pulse, determining that the error is less than a threshold, and providing a lock detect.

1 . A method of generating a synchronization switching pulse in a time division duplexing (TDD) system, the method comprising:
 receiving an input signal at an input port of a digital power meter;   receiving, at the digital power meter, a power threshold level;   measuring, using the digital power meter, a power level associated with the input signal;   determining that the power level associated with the input signal exceeds the power threshold level;   determining, for the input signal, a number of rising edges, a number of falling edges, locations of the rising edges, and locations of the falling edges;   determining, for the input signal, one or more pulse widths measured between the locations of the rising edges and the falling edges;   determining a downlink/uplink configuration associated with the input signal;   determining that at least one of the one or more pulse widths is greater than a threshold;   forming an estimated sync pulse;   determining a special subframe configuration associated with the input signal;   determining an offset;   forming a regenerated sync pulse;   determining, using an error detector, an error between the estimated sync pulse and the regenerated sync pulse;   determining that the error is less than an error threshold; and   providing the regenerated sync pulse as the synchronization switching pulse.   
     
     
         2 - 18 . (canceled)