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| 1 | Polyphase Filter Banks for Embedded Sample Rate Changes in Digital Radio Front-Ends显示文摘This paper presents efficient processing engines for software-defined radio (SDR) front-ends. These engines, based on a polyphase channelizer, perform arbitrary sample-rate changes, frequency selection, and bandwidth control. This paper presents an M-path polyphase filter bank based on a modified N-path polyphase filter. Such a system allows resampling by arbitrary ratios while performing baseband aliasing from center frequencies at Nyquist zones that are not multiples of the output sample rate. This resampling technique is based on sliding cyclic data load interacting with cyclic-shifted coefficients. A non-maximally-decimated polyphase filter bank (where the number of data loads is not equal to the number of M subfilters) processes M subfilters in a time period that is less than or greater than the M data loads. A polyphase filter bank with five different resampling modes is used as a case study for embedded resampling in SDR front-ends. These modes are (i) maximally decimated, (ii) under-decimated, (iii) over-decimated, and combined up- and down-sampling with (iv) single stride length, and (v) multiple stride lengths. These modes can be used to obtain any required rational sampling rate change in an SDR front-end based on a polyphase channelizer. They can also be used for translation to and from arbitrary center frequencies that are unrelated to the output sample rates. | Mehmood Awan Yannick Le Moullec Peter Koch Fred Harris | 2011 | ZTE Communications2011，9，4： | 3 |
| 2 | Hardware Architecture of Polyphase Filter Banks Performing Embedded Resampling for Software-Defined Radio Front-Ends显示文摘In this paper, we describe resource-efficient hardware architectures for software-defined radio (SDR) front-ends. These architectures are made efficient by using a polyphase channelizer that performs arbitrary sample rate changes, frequency selection, and bandwidth control. We discuss area, time, and power optimization for field programmable gate array (FPGA) based architectures in an M -path polyphase filter bank with modified N -path polyphase filter. Such systems allow resampling by arbitrary ratios while simultaneously performing baseband aliasing from center frequencies at Nyquist zones that are not multiples of the output sample rate. A non-maximally decimated polyphase filter bank, where the number of data loads is not equal to the number of M subfilters, processes M subfilters in a time period that is either less than or greater than the M data-load's time period. We present a load-process architecture (LPA) and a runtime architecture (RA) (based on serial polyphase structure) which have different scheduling. In LPA, N subfilters are loaded, and then M subfilters are processed at a clock rate that is a multiple of the input data rate. This is necessary to meet the output time constraint of the down-sampled data. In RA, M subfilters processes are efficiently scheduled within N data-load time while simultaneously loading N subfilters. This requires reduced clock rates compared with LPA, and potentially less power is consumed. A polyphase filter bank that uses different resampling factors for maximally decimated, under-decimated, over-decimated, and combined up- and down-sampled scenarios is used as a case study, and an analysis of area, time, and power for their FPGA architectures is given. For resource-optimized SDR front-ends, RA is superior for reducing operating clock rates and dynamic power consumption. RA is also superior for reducing area resources, except when indices are pre-stored in LUTs. | Mehmood Awan Yannick Le Moullec Peter Koch Fred Harris | 2012 | ZTE Communications2012，10，1： | 3 |
| 3 | Replace oil and fat with potato-based ingredien显示文摘 | Kaper Fred S Harry Gruppen | 1987 | Food Technology1987，，03： | 1 |
| 4 | Replace oil and fat with potatobased ingredien 显示文摘 | Kaper Fred S Harry Gruppen | 1987 | Food Technology1987，，3： | 1 |
| 5 | Direct digital synthesis-some option for FPGA显示文摘 | DiX Chris Harris Fred | 1999 | Proceeding of SPIE1999，，38： | 1 |
| 6 | HYPE : A sub-orbital spatial heterodyne spectro-polarimeter for study of Ly-ct sources in the solar system显示文摘 | Walter Harris Fred Roesler Lotfi Ben-Jaffel | 2009 | Optical Society of America2009，，： | 1 |
| 7 | Design of Wide band CIC Compensator Filter for a Digital IF Receiver 显示文摘 | Godana Jovanovic Dolecek Fred Harris | 2009 | Digital Signal Processing2009，19，5： | 1 |
| 8 | Cost Effective, Versatile, High Performance, Spectral Analysis in a Synthetic Instru- merit 显示文摘 | Wade Lowdermilk Fred Harris | 2008 | 1EEE Autotestcon 2008 Proceedings : 148 - 1532008，1，： | 1 |
| 9 | Direct digital synthesis-some options for FPGA implementation 显示文摘 | Dick Chris Harris Fred | 1999 | Proceedings of SPIE1999，，38： | 1 |
| 10 | M1477: A Prospective, Multicenter, Randomized, Double Blinded Controlled Study to Determine Whether a Single Dose of Intraduodenal Indomethacin Can Decrease the Incidence and Severity of Post-ERCP Pancreatitis显示文摘 | Farshad Elmi Federico Rossi Joseph K. Lim Harry R. Aslanian Uzma D. Siddiqui Fred S. Gorelick Hillary Drumm Priya A. Jamidar | 2010 | Gastrointestinal Endoscopy2010，，5： | 1 |
| 11 | A Study of Juvenile Theft显示文摘 | Harry J.Baker Fred J.Decker Arthur S.Hill | | 0，，02： | 1 |
| 12 | Senior digital receivers and transmitters using polyphase filter banks for wireless communications 显示文摘 | Fred Harris Chris Dick Michael Rice | 2003 | IEEE Transactions on Microwave Theory and Techniques2003，51，4： | 1 |
| 13 | Mutant ubiquitin (UBB +1 ) associated with neurodegenerative disorders is hydrolyzed by ubiquitin C-terminal hydrolase L3 (UCH-L3)显示文摘 | Frank J.A. Dennissen Natalia Kholod Denise J.H.P. Hermes Nadja Kemmerling Harry W.M. Steinbusch Nico P. Dantuma Fred W. van Leeuwen | 2011 | FEBS Letters2011，，16： | 1 |
| 14 | Replace oil and fat with potato-based ingredient显示文摘 | Kaper Fred S Harry Gruppen | 1987 | Food Technology1987，，3： | 1 |
| 15 | Study of radiation background at the north crossing point of the BEPC in collision mode显示文摘Understanding the radiation background at the north crossing point (NCP) in the tunnel of BEPCII is crucial for the performance safety of the High Purity Germanium (HPGe) detector, and in turn of great significance for long-term stable running of the energy measurement system. Therefore, as the first step, a NaI(Tl) detector is constructed to continuously measure the radiation level of photons as background for future experiments. Furthermore, gamma and neutron dosimeters are utilized to explore the radiation distribution in the vicinity of the NCP where the HPGe detector will be located. Synthesizing all obtained information, the shielding for neutron irradiation is studied based on model-dependent theoretical analysis. | 莫晓虎 张建勇 张清江 Achasov Mikhail 蔡啸 傅成栋 Harris Fred 刘倩 Muchnoi Nikolay 秦庆 屈化民 王贻芳 徐金强 张天保 | 2011 | Chinese Physics C2011，35，7： | 1 |
| 16 | Replaced oil and fat with potato-based ingredient 显示文摘 | Fred S Kaper Harry Gruppen | 1987 | Food tech1987，，3： | 1 |
| 17 | Configurable logic for digital communications显示文摘 | Dick Chris Harris Fred | 1999 | Systemsand Computer1999，，1： | 1 |
| 18 | Forming narrowbang filters at a fixed sample rate with polyphase down and up samphng filters显示文摘 | Fred Harris Benjamin Egg | | 0，，15： | 1 |
| 19 | Food Technology显示文摘 | Fred S Kaper Harry G | 1987 | Replace oil and fat with potatobased ingredient1987，，3： | 1 |
| 20 | Performance and design of Farrow filter used forarbitrary resampling 显示文摘 | HARRIS Fred J | 1997 | Digital Signal Processing Proceedings1997，13，2： | 1 |
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