SPC08-5: Noise Model Analysis of Optimized Mixed-Radix Structures for Pulsed OFDM

Author

Chang, Kai-Chuan ; Sobelman, Gerald E.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Minnesota, Minneapolis, MN

fYear

2006

fDate

Nov. 27 2006-Dec. 1 2006

Firstpage

1

Lastpage

5

Abstract

Pulsed OFDM (P-OFDM) is a proposed enhancement to Multi-Band Orthogonal Frequency Division Multiplexing which reduces the power and complexity of Ultra Wideband transceivers without sacrificing performance. In this paper, the effects of finite precision arithmetic in the mixed-radix Fast Fourier Transforms of P-OFDM architectures are analyzed using a noise model. The results of this analysis lead to the selection of optimal values for the wordlengths of the data and coefficients. Synthesis results based on these optimal wordlengths are presented for a Xilinx Virtextrade-4 FPGA implementation.

Keywords

OFDM modulation; digital arithmetic; fast Fourier transforms; field programmable gate arrays; transceivers; ultra wideband communication; FPGA implementation; finite precision arithmetic; mixed radix Fast Fourier Transforms; mixed radix structures; noise model analysis; pulsed OFDM; ultra wideband transceivers; Arithmetic; Buffer storage; Computer architecture; Delay; Diversity reception; Field programmable gate arrays; OFDM; Quadrature phase shift keying; Signal processing; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2006. GLOBECOM '06. IEEE

Conference_Location

San Francisco, CA

ISSN

1930-529X

Print_ISBN

1-4244-0356-1

Electronic_ISBN

1930-529X

Type

conf

DOI

10.1109/GLOCOM.2006.578

Filename

4151208