A Low Cost Packet Detector in OFDM-Based Ultra-Wideband Systems

Author

Lai, Jyh-Ting Justin ; Chu, Chun-Yuan ; Wu, An-Yeu Andy ; Chen, Wen-Chiang

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei

fYear

2006

fDate

Oct. 2006

Firstpage

171

Lastpage

176

Abstract

Multiband orthogonal frequency-division multiplexing (MB-OFDM) systems employ frequency-hopping technology to achieve the capabilities of multiple access and frequency diversity. However, they also complicate packet detector (PD) in terms of the requirement for the high hardware complexity. In this paper, we propose several low-cost design schemes for the PD, such as Walsh-Hadamard decomposition, buffered summation, and sign-bit-remaining methods. The estimated gate count of the resulting implemented PD is less than half that of existing solutions

Keywords

OFDM modulation; diversity reception; multi-access systems; ultra wideband communication; MB-OFDM; UWB; estimated gate count; frequency diversity; frequency-hopping technology; multiband orthogonal frequency-division multiplexing system; multiple access; packet detector; ultra-wideband system; Baseband; Circuits; Costs; Delay; Detectors; Frequency diversity; Hardware; OFDM; Radio frequency; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Systems Design and Implementation, 2006. SIPS '06. IEEE Workshop on

Conference_Location

Banff, Alta.

ISSN

1520-6130

Print_ISBN

1-4244-0383-9

Electronic_ISBN

1520-6130

Type

conf

DOI

10.1109/SIPS.2006.352576

Filename

4161846