电脑知识与技术
電腦知識與技術
전뇌지식여기술
COMPUTER KNOWLEDGE AND TECHNOLOGY
2015年
3期
252-254,257
,共4页
扩频系统%接收机%数字匹配滤波器%差分解调%FPGA
擴頻繫統%接收機%數字匹配濾波器%差分解調%FPGA
확빈계통%접수궤%수자필배려파기%차분해조%FPGA
spread spectrum system%receiver%digital matched filter%differential demodulation%FPGA
随着数字化时代的飞速发展,对于具有良好性能指标的数字直接扩频系统在各个通信领域有着广泛的应用,该文介绍一种基于FPGA的数字化直扩接收机的设计与实现,它采用优化的数字匹配滤波器来实现扩频序列的同步捕获,大大减小了系统的资源;通过在跟踪环路中加入特殊的环路滤波器使得接收机跟踪的性能得到提高;同时由于接收机中关键模块采用了参数化设计,这使得系统有非常大的灵活性.
隨著數字化時代的飛速髮展,對于具有良好性能指標的數字直接擴頻繫統在各箇通信領域有著廣汎的應用,該文介紹一種基于FPGA的數字化直擴接收機的設計與實現,它採用優化的數字匹配濾波器來實現擴頻序列的同步捕穫,大大減小瞭繫統的資源;通過在跟蹤環路中加入特殊的環路濾波器使得接收機跟蹤的性能得到提高;同時由于接收機中關鍵模塊採用瞭參數化設計,這使得繫統有非常大的靈活性.
수착수자화시대적비속발전,대우구유량호성능지표적수자직접확빈계통재각개통신영역유착엄범적응용,해문개소일충기우FPGA적수자화직확접수궤적설계여실현,타채용우화적수자필배려파기래실현확빈서렬적동보포획,대대감소료계통적자원;통과재근종배로중가입특수적배로려파기사득접수궤근종적성능득도제고;동시유우접수궤중관건모괴채용료삼수화설계,저사득계통유비상대적령활성.
With the rapid development of the digital age, to have good performance of digital direct spread spectrum system has been widely used in various communication domain, this paper introduces a digital spread spectrum receiver based on FPGA, the design and implementation of its optimization of digital matched filter is used to realize in acquisition of spread spectrum sequence, greatly reduces the system's resources;By adding special loop filter makes the receiver tracking loop tracking performance was im-proved;At the same time due to key in the receiver module uses the parametric design, which makes the system has great flexibility.
