In the second part , introduces the theory of wireless lan based on the ofdm , supplies the corresponding simulation analysis by systemview software , compares two channel coding by simulatation , gives a advice to use convolution coding , and analyses its ber 第二部分通過分析無線局域網(wǎng)的基本原理,以及采用仿真軟件分析了ofdm在無線局域網(wǎng)中的應用。通過仿真比較了兩種信道編碼的性能,并做了相應的誤碼率分析,得到了有用的結論。建議采用卷積編碼。
First , the thesis introduced conception and characters of software radio ; second , the thesis analyzed architectures of software radio ; third , the thesis discussed critical technologies of software radio and applications of dsp in software radio , moreover , realized arithmetic of crc coding , convolution code , orthogonal digital frequency conversion and multi - speeds signal process ; finally , the thesis prospected foreground of software radio 本文首先介紹了軟件無線電的概念和特征,接著分析了軟件無線電體系結構,論述了軟件無線電的關鍵技術及dsp在軟件無線電中的應用,在tms320c54x上實現(xiàn)了crc編碼、卷積碼,完成了正交數(shù)字變頻和多速率信號處理的dsp算法,最后展望了軟件無線電的應用前景。