Cdma Transmission Model in Matlab

 Cdma Transmitting Model in Matlab Dissertation

Analog & Digital Communication

____________________________________________

___________PROJECT REPORT___________

CDMA Transmission Model

An Overview in Matlab

SUBMITTED TO:

Engr. Abdul Basit

SUBMITTED BY SIMPLY:

Nadeem Raza09-ECT-05

Amir Mehmood09-ECT-22

Mohammad Shoaib09-ECT-29

Saad Najaf Khan09-ECT-38

Particular date:

15th June, 2012

UNIVERSITY OF ENGINEERING AND TECHNOLOGY TAXILA

SUB CAMPUS CHAKWAL

Introduction:

CDMA is modulation technique to transmit data more than a whole rate of recurrence spectrum. It was developed by Qualcomm as a better technology to TDMA based 2nd Technology GSM. In numerous aspects, just like power, secureness, number of users, and productivity, it achieved success in displacing TDMA as the most preferred technology. In accordance to latest statistics by CDG, CDMA is used in 1/3 of wireless technologies, with 60% of the subscribers in Asia Pacific Place. CDMA – An overview:

The subsequent model figure shows the main parts into a CDMA system. There are 4 parts to simplex indication. 1 . Transmission device: The data will be encoded by using a unique code called PN sequence (discussed in detail on next page) and then RF modulated. The last signal is definitely the transmitted through a physical route. 2 . Recipient: The newly arriving signal is first RF demodulated then decoded to get the intended signal. The decoding can be again done using a one of a kind code, just like transmitter.

Physique. 1: Overview of CDMA Simplex Transmission Program

PN Pattern a. k. a Spreading Sequences:

CDMA is a spread spectrum structured modulation technique. The PN sequence is usually applied to the input signal to achieve the preferred spreading effect. Types:

You will discover different types of spreading sequences. They can be selected on such basis as autocorrelation & cross-correlation homes and utilization type. The four major of them are listed below: 1 . Optimum length Pseudo Noise (PN) sequence a. k. a M-sequence: Maximum Length is a reference to binary sequence power generators proficient in outputting the...


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