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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 | Development of a stroke-specific quality of life scale 显示文摘 | Williams LS Weinberger M Harris LE | 1999 | Stroke1999，30，7： | 1 |
| 4 | Intensity-modulated radiation therapy with or without chemotherapy tbr nasopharyngeal carcinoma: radiation therapy oncology group phase 1I trial 0225 显示文摘 | le N Harris J Garden AS | 2009 | J Clin Oncol2009，27，22： | 1 |
| 5 | Microstructural investigation of oxidized Nd-Fe-B powders:influence of particle size on the oxidation behavior显示文摘 | Steyaert S Le B J M Harris I R | 1997 | Journal of Magnetism and Magnetic Materials1997，176，23： | 1 |
| 6 | The Apelin re- ceptor APJ: journey from an orphan to a multifaceted regulator of homeostasis 显示文摘 | O'Carroll AM Lolait SJ Harris LE | 2013 | J Endocrinol2013，219，1： | 1 |
| 7 | Interleukin 17-producing CD4q-- effector T cells develop via a lineage dis tinct from the T helper type 1 and 2 lineages显示文摘 | Harri agton LE Hatton RD Mangan PR | 2005 | Nat Immu nol2005，6，11： | 1 |
| 8 | Development of a stroke specific quality of life scale 显示文摘 | Williams LS Weinberger M Harris LE | 1999 | Stroke1999，30，7： | 1 |
| 9 | From the cradle to the clinic: VEGF in developmental, physiological, and pathological angiogenesis 显示文摘 | HARRY LE PALEOLOG EM | 2003 | Birth Defects Res C Embryo Today2003，69，4： | 1 |
| 10 | Development of a stroke-specific quality of life scale显示文摘 | Wliamms LS Weinberger M Harris LE | 1999 | Stroke1999，30，： | 1 |
| 11 | The epidemiology of diabetes in pregnant native Canadians 显示文摘 | Harris SB Caulfield LE Sugamori ME | 1997 | Diabetes Care1997，20，： | 1 |
| 12 | The effect of muscle and fas- ciocutaneous flaps on angiogenesis in open tibial fractures 显示文摘 | Harry LE Sandison A Paleolog E | 2004 | J Or- thop Trauma2004，18，： | 1 |
| 13 | Assessment of long term function following hypospadias reconstruction: do flowrates,flow quality and cosmesis improve with time? Results from the modified Bretteville technique 显示文摘 | Robinson A J Harry LE Stevenson JH | 2013 | J Plast Recon- str Aesthet Surg2013，66，1： | 1 |
| 14 | Development of a stroke-specific quality of life scale显示文摘 | Williams LS Weinberger M Harris LE | 1999 | Stroke1999，30，： | 1 |
| 15 | Development of a stroke-specific quality of life scale 显示文摘 | Williams LS Weinberger M Harris LE | 1999 | Stroke1999，30，7： | 1 |
| 16 | Development of a stroke-specific quality of life scale显示文摘 | Williams LS Weinberger M Harris LE | 1999 | Stroke1999，30，7： | 1 |
| 17 | The epidemi-ology of diabetes in pregnant native Canadians显示文摘 | Harris SB Caulfield LE Sugamori ME | 1997 | Diabe-tes Care1997，20，： | 1 |
| 18 | Development of a stroke - specific quality of life scale显示文摘 | Williams LS Weinberger M Harris LE | 1999 | Stroke1999，30，7： | 1 |
| 19 | Designing mobile support for glyeemic control in patients with diabetes显示文摘 | Harris LT Tufano J Le T | 2010 | Journal of Biome- dical Informatics2010，43，： | 1 |
| 20 | The epidemiology of diabetes in pregnant native Canadians显示文摘 | Harris SB Caulfield LE Sugamori ME | 1997 | Diabetes Care1997，20，9： | 1 |
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