HYBRID SUBCARRIER MAPPING METHOD AND SYSTEM

摘要

The method and system using an orthogonal direct-sequence spread-spectrum techniques to harmonize the different mapping schemes in transmission as , data input to the transmitter is N- point discrete Fourier transform (N- point DFT), subcarrier mapping , M- point discrete Fourier inverse transform (M- point IDFT) and the sequence of the complex numbers are modulated to a cyclic prefix (CP) insertion spread by a conversion , spread and modulated data is transmitted , and received by the receiver , the received data is a cyclic prefix (CP) removal , M -point discrete Fourier transform (M -point DFT), subcarrier demapping and equalizer , and an N -point inverse discrete Fourier method and system (N -point IDFT) is despread and demodulated to is disclosed .