Index Catalog // ScholarsArchive@OSU

Optimum equalization and synchronization of broadband multicarrier systems

Creator:: Lashkarian, Navid
Abstract:: The application of information theory and digital signal processing techniques to digital communication has resulted in robust methods for reliable high speed data transmission over noisy channels environments. Among these methods, multicarrier systems have become a viable solution for exploiting maximum spectral efficiency over both wideband highly dispersive static and...
Resource Type:: Dissertation

A comparison of two types of zero-crossing FM demodulators for wireless receivers

Creator:: McNeal, Jeff D.
Abstract:: A comparison of two novel demodulators. The first is a basic zero crossing demodulator, as introduced by Beards. The second is an approach proposed by Hovin. The two demodulators are compared to each other and to the conventional method of demodulation.
Resource Type:: Masters Thesis

Interference cancellation for shot-code DS-CDMA in the presence of channel fading

Creator:: Dutta, Amit K.
Abstract:: Interference from other adjacent users in wireless applications is a major problem in direct-sequence code-division multiple-access (DS-CDMA). This is also known as the near-far problem where a strong signal from one user interferes with other users. The current approach to deal with the near-far problem in DS-CDMA systems is to...
Resource Type:: Dissertation

Modified conjugate gradient method for ADSL echo cancellation

Creator:: Inoue, Takao
Abstract:: In recent years, high speed data communications over twisted pair cables has gained tremendous demand. Asymmetric Digital Subscriber Line (ADSL) was standardized for use over twisted pair cables. A critical component in ADSL system is the echo canceller which is intended to discriminate unwanted echo signals caused by twisted pair...
Resource Type:: Masters Thesis

New results for differentially detected [pi]/4 DQPSK signal in a direct-conversion transceiver

Creator:: Scarpa, Maxime R.
Resource Type:: Masters Thesis

Distributed arithmetic architecture for the discrete cosine transform

Creator:: Poplin, Dwight
Abstract:: The Discrete Cosine Transform is used in many image and video compression standards. Many methods have been developed for efficiently computing the Discrete Cosine Transform including flowgraph algorithms, distributed arithmetic and two-dimensional decompositions. A new architecture based on distributed arithmetic is presented for computing the Discrete Cosine Transform and it's...
Resource Type:: Masters Thesis

Mapping of recursive algorithms onto multi-rate arrays

Creator:: Zheng, Yue-Peng
Abstract:: In this dissertation, multi-rate array (MRA) architecture and its synthesis are proposed and developed. Using multi-coordinate systems (MCS), a unified theory for mapping algorithms from their original algorithmic specifications onto multi-rate arrays is developed. A multi-rate array is a grid of processors in which each interconnection may have its own...
Resource Type:: Dissertation

Sensitivity analysis and architectural comparison of narrow-band sharp-transition digital filters

Creator:: Kulkarni, Satish S.
Abstract:: Due to advances in high-density low-cost VLSI and communication technology, digital filtering and signal processing are being widely used for real-time signal processing applications. Given the filter specification, choosing the best filter structure for a given application is not a trivial task. The choice of a particular filter structure depends...
Resource Type:: Masters Thesis

Design of an asynchronous third-order finite impulse response filter

Creator:: Oren, Joel A.
Abstract:: With the increased demand for complex digital signal processing systems, real-time signal processing requires higher throughput systems. In the past, the throughput has been increased by increasing the clock rates, but synchronization can become increasingly more difficult. Recently there has been renewed interest in designing asynchronous digital systems. In an...
Resource Type:: Masters Thesis

Adaptive noise cancellation for second-order delta-sigma A/D converters

Creator:: Bribech, Habib
Abstract:: Oversampled analog-to-digital (A/D) converter architectures have been receiving increased attention for high-precision A/D converters. These architectures offer the means of exchanging resolution in time for that in amplitude. Among these oversampled A/D converters, delta-sigma modulators are the most popular method used due to their simplicity in the analog circuitry. The...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Optimum equalization and synchronization of broadband multicarrier systems

A comparison of two types of zero-crossing FM demodulators for wireless receivers

Interference cancellation for shot-code DS-CDMA in the presence of channel fading

Modified conjugate gradient method for ADSL echo cancellation

New results for differentially detected [pi]/4 DQPSK signal in a direct-conversion transceiver

Distributed arithmetic architecture for the discrete cosine transform

Mapping of recursive algorithms onto multi-rate arrays

Sensitivity analysis and architectural comparison of narrow-band sharp-transition digital filters

Design of an asynchronous third-order finite impulse response filter

Adaptive noise cancellation for second-order delta-sigma A/D converters

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