摘要
在对无线通信中现有的数字基带传输系统进行理论分析的基础上,提出了一种新的数字基带传输码型。新码型根据"0"和"1"的不同时间长度和不断翻转来编码数据。通过对新码型和典型基带码型仿真分析对比可知,新码型频谱宽度取决于"0"和"1"的长度和长度比,在不影响通信质量的情况下可以减小"0"和"1"的长度来降低功耗,并且新码含有丰富的位定时信息。新码型和CMI码在用单片机控制射频收发芯片的无线通信硬件平台上得到实现,实验表明,新码型不但编译码简单,而且可靠性更强,可以应用在工程上。
Based on a theoretical analysis of wireless communication in the existing digital baseband transmission system, this paper presented a novel digital baseband transmission code. The new code encode data according to the different length of ＂0＂ and ＂1＂ and overturn. Comparing the new code and typical baseband code by analysis and simulation shows that spectrum width of the new code depends on the length and length ratio of the ＂0＂ and ＂1＂. To reduce power consumption, the length of ＂0＂ and ＂1＂ can be shortened as does not affect the communication quality. The new code contains rich bit timing information. The new code and CMI code was tested on wireless communication hardware circuit composed of radiofrequency transceiver chip and micro-con- troller. Compared to the CMI code, new code simple encoding and decoding, greater reliability a^d lower power, so the new code can be applied in engineering.
出处
《电子技术应用》
北大核心
2013年第11期103-106,110,共5页
Application of Electronic Technique
基金
国家科技重大专项资助课题(2012ZX03004006)
关键词
基带
码型
无线通信
单片机
baseband
code
wireless communication
micro-controller
