A low complexity packet detection algorithm for a CPM modem

Author

Penrod, Ryan ; Fitz, Michael P. ; Zhu, Weijun ; Takeshita, Oscar

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

1

fYear

2004

fDate

7-10 Nov. 2004

Firstpage

1062

Abstract

This paper discusses the design of a packet detection algorithm for a burst mode continuous phase modulation (CPM) modem over flat Rayleigh fading channels in the 220 MHz frequency band. The modem design focuses on bandwidth efficiency while maintaining good synchronization performance and low complexity. The packet structure meets the Federal Communications Commission frequency emission mask for the 220 MHz frequency band. The packet detection algorithm uses a degraded maximum likelihood (ML) amplitude estimate to provide the initial timing needed for synchronization and demodulation. The ML amplitude estimate is shown to be a function of a one dimensional parameter search. The parameter search is degraded to reduce complexity while maintaining an accurate amplitude estimate.

Keywords

Rayleigh channels; continuous phase modulation; maximum likelihood detection; maximum likelihood estimation; modems; synchronisation; 220 MHz; CPM modem; Federal Communications Commission; burst mode continuous phase modulation; demodulation; flat Rayleigh fading channel; maximum likelihood amplitude estimation; packet detection algorithm; synchronization; Algorithm design and analysis; Amplitude estimation; Bandwidth; Continuous phase modulation; Degradation; Detection algorithms; Fading; Frequency synchronization; Maximum likelihood estimation; Modems;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on

Print_ISBN

0-7803-8622-1

Type

conf

DOI

10.1109/ACSSC.2004.1399303

Filename

1399303