NDLI: On the use of Pilot-Assisted Matched Filtering in UWB Time-Interleaved Sampling

Content Provider	IEEE Xplore Digital Library
Author	Venkatesh, S. Anderson, C.R. Buehrer, R.M. Reed, J.H.
Copyright Year	2006
Description	Author affiliation: Mobile & Portable Radio Res. Group, Virginia Polytech. Inst. & State Univ. (Venkatesh, S.; Anderson, C.R.; Buehrer, R.M.; Reed, J.H.)
Abstract	A software defined radio for ultra wideband (UWB) communication systems places several stringent requirements on the analog-to-digital converter (ADC). In particular, the ADC must have sufficiently high sampling frequency-typically on the order of several gigasamples per second-to accurately reconstruct the received UWB pulse. An alternative approach to using a single expensive ADC with the above features is to sample the received signal with an array of lower speed ADCs driven by time-interleaved (TI) sampling clocks, allowing the array to operate as if it were a single ADC with a much higher effective sampling frequency. However, ADC timing, gain and offset mismatches represent significant design challenges in such architectures. In this paper, we investigate the use of a pilot-based matched-filter architecture in mitigating the impact of ADC gain, offset, and timing mismatches. The analytical results derived in this paper (a) demonstrate the efficacy of a pilot-based matched filter in mitigating the impact of timing mismatch errors on a TI-ADC array, and (b) allow for the design specification of the number of pilots required in order to achieve desired system performance
Starting Page	119
Ending Page	124
File Size	6819514
Page Count	6
File Format	PDF
ISBN	1424401011
DOI	10.1109/ICU.2006.281526
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	Filtering Software Defined Radio (SDR) Analog-digital conversion Ultra Wideband (UWB) Matched filters Sampling methods Frequency Timing Performance analysis Analog-to-Digital-Converter (ADC) Software radio Ultra wideband technology Clocks
Content Type	Text
Resource Type	Article

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