Performance Evaluation and Comparison Between LDPC and Turbo Coded MC-CDMA

Performance Comparison of Turbo Coded Mc-cdma and Ds-cdma with Higher Level Modulation

Multi-carrier code division multiple access (MC-CDMA), direct sequence code division multiple access (DS-CDMA) and orthogonal frequency division multiplexing (OFDM) are the major contenders for wireless signaling technique. For higher data rates, the use of higher level data modulation is desirable. In MC-CDMA [1], the data-modulated symbol to be transmitted is spread over a number of subcarrie...

The Throughput Performance of LDPC Coded HARQ for MC-CDMA

Broadband packet access techniques will be required for the next generation mobile communications systems. Hybrid ARQ (HARQ) is one of the promising error control techniques. Recently, LDPC coding is gaining much attention. Multi-carrier code division multiple access (MC-CDMA), which uses a number of subcarriers to reduce the ISI resulting from frequency selective channels, has been attracting ...

Application of Turbo-coded Hybrid ARQ to OFDM, Multicode DS-CDMA and Multicode MC-CDMA and their Performance Comparison

Abstract OFDM, MC-CDMA and DS-CDMA are being researched vigorously as the prospective signaling technique for the next generation of mobile communications systems, which will be characterized by the broadband packet technology. With packet transmission, hybrid ARQ (HARQ) will be inevitable for error control. HARQ with rate compatible punctured turbo (RCPT) codes is one of the promising techniqu...

Adaptive Wireless Transceivers: Turbo-Coded, Turbo-Equalised and Space-Time Coded TDMA, CDMA, MC-CDMA and OFDM Systems

On the Design and Performance of LDPC Coded MC-CDMA Systems

This paper presents and compares two different strategies for LDPC coded MC-CDMA system design. In general, Turbo multiuser detection is exploited by combining per-user MMSE-PIC detection and LDPC decoder together at the receiver end. First alternative, proposed earlier by the authors, is to apply the code across the substreams and transmit the coded data using MC-CDMA. The other approach, in t...