Title :
Compensation of Phase Jitter in Frequency Hopped OFDM Systems
Author :
Zhao, Dan ; Fang, Jicheng ; Yu, Quan
Author_Institution :
Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha
Abstract :
The phase jitter of frequency hopped OFDM systems (FH-OFDM) is very different from that of OFDM systems working on a constant radio frequency (RF). In this paper the SNR loss is analyzed for the system ruined by the phase jitter. Based on the analysis on the frequency domain specification of phase jitter signal, a phase jitter compensation (PJC) algorithm is presented based on the design principle of inverse filter for FH-OFDM. Least square (LS) approach is used to exploit the phase jitter information existing in the scattered pilots. Analysis and simulation results show that choosing an appropriate length for the filter the algorithm can improve the BER performance effectively with low complexity, which will not reduce the system bandwidth availability
Keywords :
OFDM modulation; error statistics; filtering theory; frequency hop communication; interference suppression; jitter; least squares approximations; radio networks; BER performance; FH-OFDM; SNR loss; bit error rate; frequency hopped orthogonal frequency division multiplexing systems; inverse filter; least square approach; phase jitter compensation; signal to noise ratio; system bandwidth availability; Algorithm design and analysis; Filters; Frequency domain analysis; Jitter; Least squares methods; OFDM; Radio frequency; Scattering; Signal analysis; Signal design;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on
Conference_Location :
Wuhan
Print_ISBN :
1-4244-0517-3
DOI :
10.1109/WiCOM.2006.63
