Time-hopping pulse position modulation ultra-wideband digital receiver and method for removing multiple access interference

Abstract

The present invention discloses a multiple access interference eliminating time-hopping pulse position modulation ultra wide band digital receiver and a multiple access interference eliminating time-hopping pulse position modulation ultra wide band digital reception method. A local TH-PPM signal generator generates the 0 code and 1 code TH-PPM signals, the multiple access eliminating interference units carry out the AND operation on a signal received by a detector and the local TH-PPM signals to eliminate the multiple access interference information in the received signal, and the correlation detectors carry out the correlation operation on the signals outputted by the multiple access eliminating interference units and the local TH-PPM signals. A starting synchronizer synchronizes the PN code of the local TH-PPM signal generator and the PN code of the received signal and outputs a synchronous locking signal after the synchronization is finished, an out-of-step detection module determines whether the PN code of the TH-PPM signal generator is synchronous with the PN code of the received signal according to a signal outputted by a correlator, and a data recovery module demodulates and outputs the received data when the synchronous locking signal is a high level. According to the present invention, the multiple access interference can be eliminated, and the reliability of the received signal is improved.

Description

technical field [0001] The invention relates to the field of ultra-wideband wireless communication, in particular to a time-hopping pulse position modulation ultra-wideband digital receiver and method for eliminating multiple access interference. Background technique [0002] Ultra Wideband (UWB) is a new type of short-distance wireless communication technology. UWB technology uses radio waves with a bandwidth of several hundred megahertz to several gigahertz to transmit data. Compared with the most widely used short-distance wireless communication scheme (such as Bluetooth communication technology), UWB communication technology not only has low power consumption, but also can achieve a data rate hundreds of times higher than Bluetooth communication technology. [0003] The UWB modulation method is divided into carrier modulation and carrierless modulation, among which pulse position modulation (PulsePosition Modulation, PPM) is a carrierless modulation method with a simple...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem that the existing ultra-wideband receivers are affected by multiple access interference and data reception, providing a time-hopping pulse position modulation ultra-wideband digital receiver and method for removing multiple access interference

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