UWB Modem with Low Power Options

Author

Dural, Özgür ; Soliman, Samir S.

Author_Institution

Qualcomm Inc., San Diego, CA, USA

fYear

2009

fDate

20-23 Sept. 2009

Firstpage

1

Lastpage

5

Abstract

For UWB to be a competitive solution in mobile devices, power consumption of the modem has to be optimized. The focus of this paper is to decrease the power consumption of the modem at physical layer by trading frequency diversity when operating at data rates up to 200 Mbps and by changing the constraint length of convolutional code and using QPSK when operating at data rates 320 Mbps and up. We show more than 50% and 25% gains in power consumption at physical layer with additional 1 dB and 3 dB received SNR at data rates 53.3 Mbps and 480 Mbps, respectively.

Keywords

Viterbi decoding; codecs; convolutional codes; modems; quadrature phase shift keying; ultra wideband technology; Viterbi decoder; bit rate 320 Mbit/s; bit rate 480 Mbit/s; bit rate 53.3 Mbit/s; convolutional codes; frequency diversity; power consumption; quadrature phase shift keying; ultra wideband modem; Convolutional codes; Decoding; Energy consumption; Equalizers; Frequency domain analysis; Modems; Modulation coding; Physical layer; Quadrature phase shift keying; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th

Conference_Location

Anchorage, AK

ISSN

1090-3038

Print_ISBN

978-1-4244-2514-3

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2009.5379024

Filename

5379024