Meervoudige zend/ontvangst orthogonale frequentiedelingmultiplexsystemen en werkwijzen.

摘要

Orthogonal frequency division multiplexing (OFDM) transmitting and receiving apparatus and methods can extend a communication distance by duplicated transmission of symbols in multiple channels. An input OFDM data bitstream is encoded to generate a symbol stream. The symbol stream is copied into multiple symbol streams and converted into data complex symbol streams by a modulation method. An input pilot bitstream is converted into a pilot complex symbol stream, and the pilot complex symbol stream is inserted into the data complex symbol streams to generate transmission symbol streams. Fast Fourier transform (FFT) processing of the transmission symbol streams is performed. Guard intervals (GIs) are inserted into the FFT processed signals. The signals are converted into analog signals, loaded onto carriers and transmitted.