Patent ID: 7215635
Filing Date: 2007-05-08
Classification: H04B,H04J,H04L

Abstract:
1. A transmitting apparatus of Code Division Multiple Access/Orthogonal Frequency Division Muliplexing (CDMA/OFDM) comprising: first serial/parallel converting means for performing serial-to-parallel conversion for received external data to be transmitted; mapping means for generating non-binary signals from parallel data converted at the first serial/parallel converting means; temporally orthogonal coding (TOC) means for converting the non-binary signals generated at the mapping means to data having orthogonality; unique spreading code synthesizing means for spreading the data having orthogonality converted at the temporally orthogonal coding means by multiplying with a unique spreading code; second serial/parallel converting means for performing serial-to-parallel conversion for the data spread at the unique spreading code synthesizing means; complex Inverse Fast Fourier Transform (IFFT) means for performing IFFT for parallel data converted at the second serial/parallel converting means; parallel/serial converting and guard interval inserting means for performing serial-to-parallel conversion and inserting guard interval for the data IFFTed at the complex IFFT means; modulating means for modulating the data received from the parallel/serial converting and guard interval inserting means multiplying with a Radio Frequency (RF); and synthesizing means for synthesizing the data modulated at the modulating means to transmit to the air.