Joint Estimation of Carrier and Sampling Frequency Offsets Using OFDM WLAN Preamble

被引：5
|
作者：
Cheng, Qi [1 ]
机构：
[1] Western Sydney Univ, Sch Comp Engn & Math, Locked Bag 1797, Penrith, NSW 2751, Australia
来源：
WIRELESS PERSONAL COMMUNICATIONS | 2018年 / 98卷 / 02期
关键词：
OFDM; Preamble; CFO; Residual CFO; SFO; Weighted least squares; OPTIMUM RECEIVER DESIGN; RESIDUAL CARRIER; SYNCHRONIZATION; SYSTEMS; TRACKING;
D O I：
10.1007/s11277-017-4967-8
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this paper, the problem of joint estimation of carrier and sampling frequency offsets is considered, for IEEE 802.11ac-based OFDM wireless LAN systems, based on the guard interval and two long symbols (GI2L) in the preamble of a packet. The measurement model of the GI2L is developed, in the presence of both carrier and sampling frequency offsets. One method based on the GI2L is proposed and compared with some existing relevant methods based on long symbol/data symbols. An improved performance, measured by estimation error and bit error rate, is achieved by this method, at a similar computational load.
引用
收藏
页码：2121 / 2161
页数：41
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