Majumder, Satya PrasadAmin, Saimoon AraAlam, Md. Mahbubul2011-02-022011-02-0220092009-08ID 05310028ID 05310006http://hdl.handle.net/10361/761Cataloged from PDF version of thesis report.Includes bibliographical references (page 60).This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Computer Science and Engineering, 2009.In this thesis, performance analyses of DS-CDMA, MT-CDMA, MC-CDMA and MC-DS-CDMA transmission systems are carried out in a mobile radio environment .The analysis is conceded out to find the carrier to Multi-Access Interference (MAI) with a Rake receiver. The expression of Bit Error Rate (BER) is found with respect to number of users and SNIR. Also, BER performance results are evaluated numerically. Maximum number of users is estimated at a given BER with a fix number of code length. The required SNIR also find out for that maximum number of users. Results are evaluated in terms of BER with different user codes such as PN sequence, M-sequence, Gold sequence, Hadamard Walsh code sequence for the above schemes.61 pagesenBRAC University thesis are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.Computer science and engineeringThesis