基于ieee .6的无线体域网同步技术的研究based on the ieee. 6 wireless body work synchronization technology research.docx

摘要
现代网络通信技术的愿景是实现无处不在的通信,即在任何时间,任何地点, 可以与任何人通信,而可以支持这个愿景的技术就是无线通信网络技术。近年来, 各个领域都在研究无线人体局域网,例如医疗保健社会体系和信息通信技术产业。本文主要针对无线体域网系统中的同步问题进行深入研究。
本文需要研究的同步算法包括帧同步算法和载波同步算法。载波同步算法包括传统载波同步算法和最大似然频偏估计算法,本文从估计范围、估计均值、估计方差和估计精度四个方面对常见的载波同步算法进行了性能仿真分析,并从估计范围、抗噪声能力、算法复杂度和估计时间等方面对各种算法进行了详细的比较。
根据无线体域网系统的特点,通过对帧同步算法和载波同步算法的各类性能的分析比较,选出最适合 WBAN 系统的同步算法,并搭建系统平台,对所选的同步算法进行系统验证,保证系统误码率性能满足协议要求。
最后,将满足性能要求的算法改写成 Verilog HDL 程序,并使用 Quartus 软件对算法进行仿真,比较所得结果与 MATLAB 仿真结果的差异。
关键词:无线体域网 帧同步 载波同步
Abstract
work technologies have fundamental importance in supporting modern works to connect a person at anywhere, at anytime, and with anybody. Recently, there are strong demands on introducing wireless body work(WBAN) technology from various parties such as medical and healthcare societies as well as information munications technology (ICT) industries. This paper focuses on synchronization problem of the wireless body work system.
Synchronization algorithm to be studied in this paper includes frame synchronization algorithm and carrier synchronization algorithm. Carrier synchronization algorithm includes traditional carrier synchronization algorithm and maximum likelihood frequency offset estimation algorithm. Performance of carrier synchronization algorithms are analyzed from estimation range, estimation mean, estimation variance and estimation precision, compared from estimation range, anti-noise ability, plexity and estimation time.
According to the characteristics of wireless body work system, this paper select the most suitable synchronization algorithm for WBAN system through analysis parison of frame synchronization algorithm and carrier synchronization algorithm of various types of properties. Then this paper builds a platform for the selected synchronization algorithm, and verifies system performance to ensure that the system bit error rate performance can meet the requirements in the agreement.
Finally, this paper rewrites the algorithms which meet the performance requirements to