FREQUENCY DETECTORS FOR CPM SIGNALS

被引：38

作者：

DANDREA, AN

GINESI, A

MENGALI, U

机构：

[1] Dipartimento di Ingegneria della Informazione, Università di Pisa, Via Diotisalvi 2

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 1995年 / 43卷 / 2-4期

关键词：

Algorithms - Carrier communication - Codes (symbols) - Computer simulation - Data acquisition - Modulators - Optimization - Parameter estimation - Probability - Tracking (position);

D O I：

10.1109/26.380234

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Frequency tracking loops are used in digital links to control the carrier frequency of the received signals. A basic component in such loops is the frequency difference detector (FDD). This paper concentrates on a class of FDDs for use with binary continuous-phase modulation (CPM). Their derivation is based on two ideas: the maximum-likelihood principle for parameter estimation and Laurent's decomposition of a CPM signal into the sum of linearly modulated components. The proposed FDDs are suitable for digital implementation and their operation is independent of clock recovery. Analysis and simulation are employed to investigate tracking operation and acquisition capability of frequency control loops endowed with such FDDs, Numerical examples are provided for modulation schemes of practical interest such as MSK and Gaussian MSK. The loop acquisition range is found to be fairly large, about 0.5-1.0 times the bit rate.

引用

页码：1828 / 1837

页数：10

共 23 条

[1] A NEW PATTERN JITTER FREE FREQUENCY ERROR DETECTOR [J].