求高人帮我翻译一段200文字左右的文字 汉译英

This paper in the analysis of packet-based encoding technology QPSK Rayleigh channel of a need to study, described the group codec technology, BPSK QPSK and the modem principle and vector with the corresponding signal space, Switzerland Lee channel signal generator and the characteristics of the generation on the basis of principle, based on the design of the hamming BPSK and QPSK Rayleigh channel model, and this has to be based on the hamming BPSK and QPSK Rayleigh channel simulation program flow diagram and Simulation will conduct a comparative analysis of visible, HAMMING binary codes can reduce the bipolar communication system bit error rate, thereby enhancing the effectiveness of the communication results.

The present paper in the analysis carries on after block encoding technology QPSK the Rayleigh channel's analysis has the necessity studies, elaborated the block encoding decoding technology, BPSK and the QPSK modulation demodulation principle and the vector chart and the corresponding signal space, the Rayleigh channel's characteristic and in signal generating device's production principle's foundation, has designed based on hamming code BPSK and QPSK the Rayleigh channel model, and has drawn up by this based on hamming code BPSK and QPSK the Rayleigh channel simulated program flow block diagram, and carried on the simulation curve the comparative analysis to be obvious, the HAMMING code might cut the binary bipolarity communications system's error rate, thus enhancement correspondence valid result.