Baseband Tranceiver for Code-shifted Reference Impulse-radio Ultra-wideband (CSR-IR-UWB) System PDF Download
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Author: Chen Wei
Publisher:
ISBN:
Category :
Languages : en
Pages : 274
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Book Description
Author: Chen Wei
Publisher:
ISBN:
Category :
Languages : en
Pages : 274
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Book Description
Author: Jet'aime D. Lowe
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Chen Wei
Publisher:
ISBN:
Category : Radio
Languages : en
Pages : 0
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Author: Jet'aime D. Lowe
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author:
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 69
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Book Description
Non-coherent impulse-radio ultra-wideband (IR-UWB) transceivers are attractive candidates for applications where silicon area and power consumption are relatively limited. This thesis presents the compact digital architecture design and implementation of a non-coherent IR-UWB transceiver based on the energy detection scheme, including the synchronizer module. This thesis also presents the first compact hardware implementation of a code-shifted reference (CSR) UWB transceiver. The security of the transmission is based on changing the physical properties of the transmission without the use of higher level security options. The software models of the designed transceivers are simulated and verified in both floating-point and fixed-point numerical representations. The synthesizable Verilog descriptions of both transceiver architectures are simulated and verified against their fixed-point simulation models. The transceivers are implemented on our custom-developed field-programmable gate array (FPGA) board. The bit error rate performance of the transceivers is measured in real-time on the FPGA, utilizing an accurate on-chip Gaussian noise generator. The characteristics and implementation results of the transceiver architectures on the FPGA are presented. An ASIC architecture of the IR-UWB transceiver is estimated to occupy 0.035287 mm2 and dissipate 2.232 mW from a 1.1-V supply while operating at 230 MHz in a standard 45-nm CMOS technology. An ASIC architecture of the CSR-UWB transceiver is estimated to occupy 0.035651 mm2 and dissipate 2.706 mW from a 1.1-V supply while operating at 223 MHz in the same standard 45-nm CMOS technology.
Author: Bhargava Sahukar
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Ranjit Gharpurey
Publisher: Springer Science & Business Media
ISBN: 0387692789
Category : Technology & Engineering
Languages : en
Pages : 207
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Book Description
This book is a compilation of chapters on various aspects of Ultra Wideband. The book includes chapters on Ultra Wideband transceiver implementations, pulse-based systems and one on the implementation for the WiMedia/MBOFDM approach. Another chapter discusses the implementation of the physical layer baseband, including the ADC and post-ADC processing required in the UWB system. Future advances such as multiantenna UWB solutions are also discussed.
Author: Khalid Aldubaikhy
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: David Christopher Laney
Publisher:
ISBN:
Category :
Languages : en
Pages : 326
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Author: Ali Ebrazeh
Publisher:
ISBN:
Category : Biomedical engineering
Languages : en
Pages : 132
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Book Description
This project has developed an energy-efficient, high data-rate, impulse radio ultra wideband (IR-UWB) transceiver, operating in three channels within 3-5 GHz for centimeter-to-meter range biotelemetry. Fabricated in 90 nm 1P/9M CMOS, the transceiver integrates an all-digital transmitter with a waveform-synthesis pulse generator and a timing generator for pulse modulation and phase scrambling that, as well as a noncoherent receiver with front-end RF amplification/filtering, self-correlation for energy detection and digital synchronization of the baseband clock and data. The transmitter provides great flexibility in reconfiguring the UWB pulse waveform in the time domain (e.g., overall shape, amplitude, duration) as well as its power spectral density (PSD) in the frequency domain (e.g., center frequency, bandwidth, peak level). A fully integrated receiver would also significantly reduce its power consumption as compared to that of a discrete implementation, addressing another limitation for true portability of the centimeter-range transceiver and greatly enhancing energy efficiency per received bit in the wireless link. The receiver RF front-end can provide up to 37 dB of gain with adjustable bandwidth, sharp roll-off and tunable center frequency at 3.5, 4 and 4.5 GHz for channel selection and robustness against out-of-band noise/interference.Employing a miniaturized, UWB, chip antenna for the transmitter and receiver, wireless transmission of pseudo-random binary sequence (PRBS) data at rates up to 75 Mb/s over 10 cm-1 m is shown for portable application. Further, employing a high gain horn antenna for the receiver, wireless transmission of PRBS data at rates up to 125 Mb/s over 50 cm-4 m is shown for stationary application with transmitter and receiver energy consumption of 14 pJ/pulse and 0.15 nJ/b, respectively, from 1.2 V. To address the problem of data rate in high-channel-count neurochemical monitoring, we demonstrated proof-of-concept feasibility of utilizing IR-UWB signaling technique for wireless transmission of dopamine concentrations levels recorded by fast-scan cyclic voltammetry (FSCV) at a carbon-fiber microelectrode (CFM), and compares the results with those obtained by using a conventional frequency-shift-keyed (FSK) transceiver as the uplink.
