Design And Implementation Of Communication Base Band Unit Based On M-Ary Spread Spectrum

On the basis of the research on M-ary spread spectrum communication theory and according to the requirements of the burst communication system parameters,this thesis presents the baseband transmission unit design and computer simulation.It also completes the FPGA design of the baseband transceiver modules in a communication system.The main contents are as follows:1.On the basis of M-ary spread spectrum communication technology,the M-ary spread spectrum based communication design is proposed in accordance with the demand for the system parameters.2.A real-time capture method suitable for communication system is presented through studied the partial matched filter capture algorithm based on the Fast Fourier Transform(PMF-FFT).The algorithm enables the real-time capture of a 10000-length pseudo-random sequence.The simulation results show that the algorithm can satisfy the system requirements.3.Design the FPGA-based baseband unit in communication system and illustrate the simulation results of the baseband transceiver unit.