Simulation of MC-CDMA Systems

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Authors
  1. Nguyen, M.Q.
  2. Fortier, P.
  3. Roy, S.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN);Laval Univ, Quebec QUE (CAN) Laboratoire de Radiocommunications et de Traitement du Signal
Abstract
Recently, Orthogonal Frequency Division Multiplexing (OFDM) has become a very attractive multicarrier transmission technique for wireless high speed data communications. OFDM offers robustness to multipath fading without having to provide powerful channel equalization. In order to support multiple users with high speed data communications, the Multi-Carrier Code Division Multiple Access (MC-CDMA) technique is used to address these challenges. MC-CDMA is a combination of OFDM and Code Division Multiple Access (CDMA) and has the benefits of both systems. Thus, the parameters of OFDM become the basic parameters of MC-CDMA. Simulations were performed for an MC-CDMA system under different channel environments. The simulation parameters considered were: guard time interval, symbol duration, sampling rate, and number of data subcarriers. The goal of the simulations was to allow for different MC-CDMA configurations to be tested in order to obtain the best system parameters. Simulations of MC-CDMA systems were also performed with different numbers of active users.

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Keywords
OFDM;pilot tone;channel estimation;MC-CDMA;spreading;channelisation;scrambling;CDMA (Code Division Multiple Access);Digital signal processing;Wireless communication
Report Number
DRDC-OTTAWA-CR-2006-292 — Contractor Report
Date of publication
01 Nov 2006
Number of Pages
86
DSTKIM No
CA028923
CANDIS No
527107
Format(s):
CD ROM

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