Anti-interference high-speed transmission method for ultra-wideband system based on code selection technology

Abstract

The invention provides an anti-interference high speed transmission method for an ultra wide band system based on a code selection technique, and belongs to the technical field of wireless communications. The system comprises a source node and a destination node. The method provided by the invention aims to improve the data transmission rate of the system through the code selection technique; the code selection technique uses partial data bits to be transmitted to perform spreading code selection, so that aspreading code carries certain transmission data bits, andthe transmission rate of the system can be effectively improved. The anti-interference high speed transmission method for the ultra wide band system based on the code selection technique provided by the invention uses an orthogonal complementary code as the spreading code to effectively suppress system multipath interference, and an adopted nonlinear Chirp pulse can effectively reduce the influence of narrow-band interference, therefore, the transmission rate and the anti-interference ability of the ultra wide band system can be effectively improved by the anti-interference high speed transmission method.

Description

technical field [0001] The invention relates to an anti-jamming high-speed transmission method of an ultra-wideband system based on code selection technology, which belongs to the field of wireless communication. Background technique [0002] Ultra-wideband (UWB) is a low-power short-distance high-speed wireless communication technology, which achieves a very high transmission rate by occupying an extremely wide bandwidth (3.1GHz-10.6GHz), and provides a solution to the problem of wireless high-speed data transmission. new way. UWB systems are mainly realized through two schemes: Direct Sequence Spread Spectrum UWB (DS-UWB) and Multiband Orthogonal Frequency Division Multiplexing UWB (MB-OFDM). MB-OFDM technology is a multi-band mode with high frequency band utilization, flexible configuration and good rate scalability, but the cost of implementation is relatively high. DS-UWB technology is also called single-band mode or narrow-pulse mode. Its data transmission can share ...

AI Technical Summary

Problems solved by technology

In a traditional OCC-based code division multiple access (CDMA) system, a user needs a spreading code set, and every time a data bit is sent, OCC needs to be used to spread the spectrum once, which increases the system transmission burden and limits the information transmission rate.

[0004] The remarkable feature of UWB system is that it uses a very wide frequency spectrum in a shared manner, and its signal transmission power is extremely low, which will not have a significant impact on narrowband systems existing in the UWB system spectrum. However, for UWB systems, its The narrowband system in the frequency band has relatively strong power, which will inevitably cause serious interference to the ultra-wideband system

Images