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Spectrum-Aware Orthogonal Frequency Division - Virginia Tech
Dec 15, 2010 ... This work explores the application of reconfigurable hardware to the physical ... FPGA implementations of parameterizable OFDM and filter bank ... FFT. Fast Fourier Transform. FIR. Finite Impulse Response. FIFO ...... The benefits of OFDM are its parallel-friendly hardware implementation, bandwidth effi-.
[ Recio_AL_D_2010.pdf - Read/Download File

cyclostationary detection for ofdm in cognitive radio systems
Aug 1, 2011 ... of detecting OFDM signals in a noisy environment. One of the .... The cognitive radio is an intelligent wireless communication system that is aware of its .... characteristics, waveforms, bandwidth response, and even on the fly reconfigurability. .... Frequency domain requires an FFT whose size N improves.
[ viewcontent.cgi?article=1022&context=elecengtheses - Read/Download File

Practical Implementation Considerations for Spectrally Agile
Sep 4, 2009 ... As the demand for bandwidth increases, the inefficient use of the spectrum becomes ... tecture is proposed for the synchronization, and a pruned FFT/IFFT core is designed ... 2.3.5 Complete Transmitter and Receiver Structure for OFDM . ..... an architecture for a SDR platform using reconfigurable FPGAs [8].
[ bobrowksi.pdf - Read/Download File

Real-time experimental demonstrations of software reconfigurable
“Software-defined fragmentation-aware elastic optical networks enabled by ... solution using direct detection of multiCAP signal in 14 GHz bandwidth per lane,” in Optical .... Fourier transform (IFFT) for producing real-valued OFDM time- domain ...
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Multicarrier Spread Spectrum Modulation Schemes and Efficient FFT
Jul 17, 2014 ... implementation using FFT and reconfigurability of transmission parameters. .... in bandwidth efficiency compared to OFDM-OQAM and CMT. ... investigated the design of channel-aware access control (CAAC) algorithms to ...
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ISED 2014
... and Siva S. Yellampalli. Energy Efficient, Scalable, and Dynamically Reconfigurable FFT Architecture for OFDM .... Low Voltage CMOS Active Inductor with Bandwidth and Linearity Improvement .................................................................... ....79. Priya Meharde .... Power-Aware Automated Pipelining of Combinational Circuits .
[ 07172590.pdf?arnumber=7172590 - Read/Download File

Interference-Aware Scheduling in the Multiuser MIMO-OFDM Downlink
system bandwidth and scrambling them with a cell-specific ... (OFDM) waveforms remain orthogonal after passing through a ... Note that OFDM simplifies the ... Interference-Aware Scheduling in the. Multiuser ..... a discrete Fourier transform ( DFT) prior to mapping .... The same reconfigurable signal processing platform is ...
[ Jungnickel ComMag.pdf - Read/Download File

OFDM-Based Cognitive Radio for DSA Networks - The Information
Sep 5, 2007 ... of existing wireless services, demand for additional bandwidth is rapidly ... OFDM technique implements fast Fourier transform (FFT) algorithms for modulat- ..... DSA networks because of their rapid reconfigurability and ..... to the agility of the SDR technology, the radio needs to be spectrally aware as well.
[ Rajbanshi2007_ITTC-FY2008-TR-31620-05.pdf - Read/Download File

Advances in Cognitive Radio Networks: A Survey - Signals and
can equip users with cognitive capability and reconfigurability. [5] [3]. Cognitive capability refers to ... using the spectrum, they need to be aware of the primary.
[ Wang_JSTSP_draft.pdf - Read/Download File

Channel, spectrum, and waveform awareness in OFDM-based
Jul 16, 2007 ... 1.4.1 Chapter 2: OFDM for Cognitive Radio: Merits and Challenges. 7 .... 8.3.4 FFT Size and Communication Standard. 144 .... Illustration of DUDE algorithm for bandwidth and center frequency estimation. ..... sense, learn, and be aware of parameters related to the radio channel characteristics, availability.
[ viewcontent.cgi?article=3424&context=etd - Read/Download File

Revisiting WiFi in the Cognitive Radios Era - Cognitive Systems
Policy aware - reconfigurable hardware,. SDRs ... Provides free high-bandwidth connectivity to devices & people …a natural for .... Shapes OFDM signal to fit in 6 MHz TV Band. 100 mw of Tx ... Applies 2048 FFT on scanner samples. Matches ...
[ Bahl - Revisiting Wireless Networking in the Cognitive Radios Era.pdf - Read/Download File

Spectrum and Energy Efficient Solutions For OFDMA Collaborative
Dec 17, 2013 ... of cooperative relay-assisted OFDMA wireless networks. First, various radio re .... bandwidth efficiency, with link asymmetry and imperfect CSI .. 40 ..... Fourier transform (FFT). .... bile RN based wireless networks is therefore reconfigurable. Mobile .... This tutorial started from the channel aware scheduling al-.
[ 978-951-39-5500-7_vaitos17122013.pdf?sequence=1 - Read/Download File

Fundamental Green Tradeoffs - arXiv.org
Apr 28, 2016 ... the tradeoffs between energy, bandwidth, deployment, and delay ... Energy Aware Radio and network TecHnologies .... help of fast Fourier transform (FFT), traditional power-hungry OFDM technology can be ..... Another promising direction is to develop reconfigurable hardware platform for the NOA.
[ 1604.07918 - Read/Download File

partially reconfigurable system for Link Adaptation algorithms on an FPGA and moves through ..... pling frequency is twice the bandwidth. ..... In other words, the radio device is aware of its surroundings and adapts itself ... usage and OFDM already has this functionality in the form of the FFT operation to demodulate.
[ 07gr1139.pdf - Read/Download File

TR 103 067 - V1.1.1 - Reconfigurable Radio Systems (RRS - ETSI
Reconfigurable Radio Systems (RRS); ... Users of the present document should be aware that the document may be subject to revision or change of status. ..... Protecting TV receivers by pre-coded OFDM . ..... Inverse Fast Fourier Transform.
[ tr_103067v010101p.pdf - Read/Download File

TR 102 945 - V1.1.1 - Reconfigurable Radio Systems (RRS) - ETSI
Users of the present document should be aware that the document may be .... Reconfigurable Radio Systems (RRS) to produce RRS deliverables. .... Correction (FEC), Fast Fourier Transform (FFT)/Inverse Fast Fourier Transform ( IFFT), .... usage, interconnect bandwidth occupation, Radio Frequency (RF) circuitry, etc.
[ tr_102945v010101p.pdf - Read/Download File

Cognitive Radio, Software Defined Radio, And Adaptive
Chip2Chip communications (reconfigurable electronic devices .... ITU: A radio or system that senses, and is aware of, its operational ..... Adaptive OFDMA, scalable bandwidth ... For fixed carrier spacing, more BW means increased FFT size.
[ T7_Arslan_CR_SDR_Adaptive_Intro_CCNC2012_7.pdf - Read/Download File

Download Slides - 11th EAI International Conference on Cognitive
Have the capability to be aware of their surrounding ... Bandwidth loss incurs because of CP ... FFT-based OFDM: Improving the spectrum of transmit signal ..... Reconfigurable BEE2,” Fortieth Asilomar Conference on Signals, Systems and ...
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Coarse-Grained Reconfigurable Computing for Power Aware
A domain specific reconfigurable architecture is both efficient and flexible. ... computations within the FFT kernel resemble the .... high memory bandwidth, which is obtained by having 10 .... processing of OFDM based systems can be done.
[ ersa06_paper.pdf - Read/Download File

Synchroscalar: A Multiple Clock Domain, Power-Aware, Tile-Based
Power-Aware, Tile-Based Embedded Processor. John Oliver ... plexing (OFDM) for 802.11a, MPEG4 encoding, stereo feature extraction and .... Reconfigurable Interconnect. Synchroscalar ... izontal bus between columns, which both meets bandwidth .... jor components in the 802.11a receiver are the FFT, Demod- ulation ...
[ ISCA2004.pdf - Read/Download File

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