Open AccessPerformance of Different Concatenated Coding Schemes for CDMA System
Author(s) -
Zainab Majeed Abid
Publication year - 2018
Publication title -
maǧallaẗ al-handasaẗ/journal of engineering
Language(s) - English
Resource type - Journals
eISSN - 2520-3339
pISSN - 1726-4073
DOI - 10.31026/j.eng.2018.12.06
Subject(s) - concatenated error correction code , convolutional code , computer science , constant weight code , multipath propagation , interleaving , fading , code division multiple access , repetition code , rake receiver , electronic engineering , turbo code , algorithm , channel (broadcasting) , telecommunications , decoding methods , block code , engineering , operating system
In this paper different channel coding and interleaving schemes in DS/CDMA system over multipath fading channel were used. Two types of serially concatenated coding were presented. The first one composed of Reed-Solomon as outer code, convolutional code as inner code and the interleaver between the outer and inner codes and the second consist of convolutional code as outer code, interleaved in the middle and differential code as an inner code. Bit error rate performance of different schemes in multipath fading channel was analyzed and compared. Rack receiver was used in DS/CDMA receiver to combine multipath components in order to enhance the signal to noise ratio at the receiver.