Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"wireless receivers"”.
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Adaptive Blocker Cancellation For Wireless Receivers
… one of the most difficult requirements for a wireless receiver. Current state-of-the-art analog filtering ADCs are analyzed and compared in detail. Recognizing that the analog circuitry requires accurate calibration and PVT correction, a digital filtering ADC in the baseband is proposed that …
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A nonlinear dynamic system for spread spectrum code acquisition
… by a Digital Signal Processor chip in digital wireless receivers. We eventually hope to produce a novel physical system which exhibits the nonlinear dynamics we require, thereby creating one of the first nonlinear dynamic systems engineered to perform a practical computation. This system, …
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Statistical Analysis of Wireless Communication Systems Using Hidden Markov Models
… the use of hidden Markov models (HMM) in wireless communication systems. HMMs are a probabilistic method which is useful for discrete channel modeling. The simulations done in the thesis verified a previously formulated methodology. Power delay profiles (PDP) of twelve wireless receivers …
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Sphere detection and LDPC decoding algorithms and architectures for wireless systems
Ever increasing demand for high data rate wireless transmissions with high spectral efficiency leads to utilization of communication systems with multiple transmit and receive antennas. In addition, excellent error-rate performance can be achieved with iterative receiver structure composed of inner …
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The Effect of Receiver Nonlinearity and Nonlinearity Induced Interference on the Performance of Amplitude Modulated Signals
All wireless receivers have some degree of nonlinearity that can negatively impact performance. Two major effects from this nonlinearity are power compression, which leads to amplitude and phase distortions in the received signal, and desensitization caused by a high powered interfering signal at …
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Circuit Design And Reliability Of A Cmos Receiver
… CMOS RF design and reliability for portable wireless receivers. The objective behind this research is to achieve an increase in integration level, and gain more understanding for RF reliability. The fields covered include device, circuit and system. What is under investigation is a multi-band …
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General Interference Suppression Technique For Diversity Wireless Rece
The area of wireless transceiver design is becoming increasingly important due to the rapid growth of wireless communications market as well as diversified design specifications. Research efforts in this area concentrates on schemes that are capable of increasing the system capacity, providing …
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Towards a Wireless Aircraft
… of of an aircraft’s wired interconnects with wireless data connections would offer a number of benefits. These include: weight reduction, easier maintenance, faster aircraft design, simpler retrofitting and greater redundancy. However, attempting to do this produces a lot of challenges and …
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Enhancing spectrum utilization through cooperation and cognition in wireless systems
We have seen a proliferation of wireless technologies and devices in recent years. The resulting explosion of wireless demand has put immense pressure on available spectrum. Improving spectrum utilization is therefore necessary to enable wireless networks to keep up with burgeoning demand. This …
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Iterative receivers with channel estimation for MIMO and multi-user OFDM systems
The traffic in wireless networks has been showing an exponential growth over the last decade. In order to meet the demand, and support a continuation of this growth, the scarce radio resources need to be efficiently used. The use of multiple antenna (MIMO) systems and iterative (turbo) receivers …
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Integrated realizations of reconfigurable low pass and band pass filters for wide band multi-mode receivers
With the explosive development of wireless communication systems the specifications of the supporting hardware platforms have become more and more demanding. According to the long term goals of the industry, future communications systems should integrate a wide variety of standards. This leads to …