NDLI: Parallel OFDM Signal Generation for UWB Systems

Content Provider	IEEE Xplore Digital Library
Author	Krall, C. Witrisal, K.
Copyright Year	2006
Description	Author affiliation: Christian Doppler Lab. for Nonlinear Signal Process., Graz Univ. of Technol. (Krall, C.; Witrisal, K.)
Abstract	A parallel signal generation scheme for OFDM signals is presented. Conventionally, the generation of OFDM signals is implemented by computing an inverse discrete Fourier transform (IDFT). If the bandwidth is very large, as in ultra-wide band (UWB) systems, preferably integrated solutions are used to generate the communication signals. Additionally, the output of the IDFT is protected against multipath propagation effects with either a cyclic extension or zero-padding. The system described in this paper enables the implementation of a UWB OFDM signal on low complexity and low cost hardware by generating subband OFDM signals. We show that additional errors are introduced on the subband edges, however. A performance study in terms of symbol error rate (SER) has been conducted. The results show that similar SER performance is achieved when either using a highly integrated solution or our parallel signal generation approach
Starting Page	243
Ending Page	247
File Size	6051035
Page Count	5
File Format	PDF
ISBN	1424401011
DOI	10.1109/ICU.2006.281557
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	DSP/FPGA implementation Orthogonal Frequency Division Multiplex (OFDM) Discrete Fourier transforms Proposals Digital signal processing chips Transmitters Ultra Wide-Band (UWB) Bandwidth Signal processing Signal generators OFDM modulation Hardware Field programmable gate arrays
Content Type	Text
Resource Type	Article

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