Asian Science
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Abstract: Wireless communication is an incipient technique to increase
portability, but is inept on grounds of security and capacity. Wireless communication
coupled with multiple access techniques help in resolving these issues and aid
in providing variable data rates. The security aspects can be palliated by using
spread spectrum with information hiding mechanisms. This study analyses confidential
data hiding using spread spectrum scheme added to Orthogonal Frequency Division
Multiplexing (OFDM) system adopting different modulation schemes. Performance
analysis is done with and without confidential data embedding considering Additive
White Gaussian Noise (AWGN) channel. Code Division Multiple Access (CDMA) are
compared and analysed with Multicarrier CDMA (MC CDMA) schemes using Bit Error
Rate (BER) performance.