Research on the Equivalence of Pulsed Interference Signal and CW Signal in DSSS Communication System

2013 ◽  
Vol 462-463 ◽  
pp. 896-899
Author(s):  
Ying Wang ◽  
Jiang Dong
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Spread Spectrum ◽  
Communication System ◽  
Continuous Wave ◽  
Direct Sequence Spread Spectrum ◽  
Interference Signal ◽  
Direct Sequence

Pulsed interference signal and pure frequency continuous wave (CW) jamming signal have the same effect on performance of bit error rate (BER). Due to equivalence, we can effectively simplify the complex of the direct sequence spread spectrum (DSSS) communication system. The equivalence will be simulated by the software SystemView in systematic level.

Research of Direct Sequence Spread Spectrum Communication System Based on MATLAB

2011 ◽  
Vol 103 ◽  
pp. 279-284 ◽  
Author(s):  
Xue Jun Li ◽  
Zhi Cheng He ◽  
Qi Li
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Spread Spectrum ◽  
Communication System ◽  
Direct Sequence Spread Spectrum ◽  
Model System ◽  
Spread Spectrum Communication ◽  
Direct Sequence ◽  
System A ◽  
Simulation Condition

This paper described the theory which based on the spread spectrum communication system, a simulation model was designed based on MATLAB, and each module of the model was briefly introduced. In a particular simulation condition, ran the simulation program, and an expected result was obtained. Meanwhile, by design a spread spectrum communication system of two users, detect the bit error rate corresponding with the two users in different bit error rate (SNR), directly verified the validity of the model system.

The Application of a Linear FM Interference Suppression in DSSS Technology Systems

2014 ◽  
Vol 644-650 ◽  
pp. 4599-4602
Author(s):  
Gang Fu ◽  
Jian Hua Lin ◽  
Qian He
Keyword(s):  
Spread Spectrum ◽  
Communication System ◽  
Interference Suppression ◽  
Direct Sequence Spread Spectrum ◽  
Signal Interference ◽  
Interference Signal ◽  
Direct Sequence ◽  
Research Focus ◽  
Wideband Interference ◽  
Suppression Technique

Spread spectrum communication system wideband interference suppression technique has drawn increasing attention. In this paper, the typical broadband interference signal interference LFM (Linear Frequency-Modulated, LFM), for example, the results of research focus and reviews the current direct sequence spread spectrum (Direct Sequence Spread Spectrum, DSSS) system wideband interference suppression.

scholarly journals Bit Error Rate Performance of Spread Spectrum Communication Systems for AWGN Channels

2020 ◽  
Vol 9 (3) ◽  
pp. 277-280
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Spread Spectrum ◽  
Communication Systems ◽  
Digital Communication ◽  
Additive White Gaussian Noise ◽  
Direct Sequence Spread Spectrum ◽  
Rate Performance ◽  
Direct Sequence ◽  
Spread Spectrum Systems

The digital communication technologies have gained immense significance as it provides secure and error free services. One of the major advantages of digital communication is that they are much resistant to transmitted as well as interpreted errors. For ensuring the security of data, the most suitable method is to use spread spectrum technique. The spread spectrum technique has gained immense popularity for use in various systems as the spreading of the spectral bandwidth offer many advantages, including the establishment of secure communications, increasing resistance to interference, noise rejection, and so on. The signals which are modulated by using these techniques cannot be jammed and are very hard to interfere. This paper presents the results of investigation of BPSK based direct sequence spread spectrum systems for Additive White Gaussian Noise (AWGN) and undersea channels. The bit error rate performance of BPSK based direct sequence spread spectrum systems has been simulated for the AWGN channel and the results have been plotted.

The multi-antenna code multiplexing front-end: theory and performance

2010 ◽  
Vol 2 (6) ◽  
pp. 515-522
Author(s):  
Matthieu Gautier ◽  
Guillaume Villemaud ◽  
Ioan Burciu
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Spread Spectrum ◽  
Direct Sequence Spread Spectrum ◽  
Direct Sequence ◽  
Chip Area ◽  
Front End ◽  
Analog Front End ◽  
Measurement Results ◽  
And Performance

In this paper, we address the architecture of a multi-antenna receiver and we aim at reducing the complexity of the analog front-end. To this end, an innovative architecture is introduced based on code multiplexing. This architecture uses the direct sequence spread spectrum technique in order to multiplex the different antennas contributions through a single In-phase/Quadrature (IQ) demodulator. Simulation and measurement results show that the bit error rate does not increase so much with the multiplexing in both Gaussian and fading environments and with strong radiofrequency (RF) defaults conditions. The complexity evaluation shows that the proposed architecture significantly reduces the chip area and the power consumption of the front-end.

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