OFDM (Orthogonal Frequency Division Multiplexing) is one of the major multicarrier systems used in present day wireless communications. The capability to meet out the demand for very high data rate with in the restricted bandwidth makes it more popular. The evolving technology improves the OFDM by replacing the conventional FFT based system with DWT-OFDM. This emerging trend is currently in the laboratory level. This paper discusses about the selection of suitable modulation scheme for DWT OFDM, after simulating the different possible M-ary methods with various constellation levels. Rayleigh fading channel environment for simulation was created using MATLAB program and the results infer that the QAM is the most suited procedure for DWT based OFDM.
">OFDM (Orthogonal Frequency Division Multiplexing) is one of the major multicarrier systems used in present day wireless communications. The capability to meet out the demand for very high data rate with in the restricted bandwidth makes it more popular. The evolving technology improves the OFDM by replacing the conventional FFT based system with DWT-OFDM. This emerging trend is currently in the laboratory level. This paper discusses about the selection of suitable modulation scheme for DWT OFDM, after simulating the different possible M-ary methods with various constellation levels. Rayleigh fading channel environment for simulation was created using MATLAB program and the results infer that the QAM is the most suited procedure for DWT based OFDM.