The objective of this lab experiment is tolearn the fundamentals of the directsequence spread spectrum and code division multiple address techniques.To get familiar with thedirectsequence spread spectrummodulator and demodulator. And thedirectsequence spread spectrumsystem can be shown as: Figure 1. Di...
Research of Direct Sequence Spread Spectrum Communication System Based on MATLABSpread spectrum communicationMATLABCDMABit error rate (SNR)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 ...
Direct-Sequence Spread Spectrum Systems Let us consider the transmission of a binary information sequence by means of binary PSK. The information rate is R bits per second, and the bit interval is Tb = 1 / R seconds. The available channel bandwidth is Be hertz, where Be » R. At the ...
6.1.1Direct Sequence Spread Spectrum (DSSS) DSSSis the most fundamental form ofspread spectrumtechniques. In this type, the message or signal wave is spread by modulation using a wide band code known as the Pseudo Noise (PN) code. This PN code consists of a radio pulse with a very short...
1.0 Direct Sequence Spread Spectrum (DSSS) Modem Reference Design Functional Specification 14 Introduction Much of the signal processing performed in modern wireless communications systems—such as digital modulator/demodulator applications—takes place in the digital domain and requires high throughput. ...
1. 直接序列扩频 它使用“直接序列扩频(direct-sequence spread-spectrum)”调变技术,在1.25英寸的距离内,可以在4.5GHz频率在实体层实现56… www.eettaiwan.com|基于5个网页 2. 直接序列展频方式 RF设计与应用蓝芽与无线区域... ... (Wireless LAN 无线区域网路) (1)直接序列展频方式(Direct-sequence spread-...
the processing gain and the coding gain can be used to enable many DS spread spectrum signals to occupy the same channel bandwidth, provided that each signal has its own pseudorandom (signature) sequence. Thus it is possible to have several users transmit ...
美 英 un.直接序列扩谱通信 英汉 un. 1. 直接序列扩谱通信 例句 释义: 全部,直接序列扩谱通信
Also, direct sequence spread spectrum (DSSS) is used to limit the interference among nearby clusters [62,63]. The CHs consume much higher energy than normal nodes due to their extra communication and computation loads. Therefore, the role of CH is rotated among the nodes periodically to ...
Direct Sequence/Spread Spectrum Multiple Access Direct Service Dialing Capability Direct Service Industry Direct Service Professional Direct Service Restauration Direct Service Tribes Advisory Committee Direct Service Workforce Direct Services Dialing Direct Services-ANI-Based ...