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 18 of 18 for “"Channel Simulation."”.
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IVDS System: Channel Simulation and Repeater Unit Design
… Within the project, two areas were focused upon: channel simulation and the Repeater Unit. Additionally, the overall system was discussed along with its background. The purpose of channel simulation was to demonstrate the viability of the unique communication channel model proposed for the IVDS …
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DOCSIS 3.1 cable modem and upstream channel simulation in MATLAB
… providers to employ cable modem (CM) plus channel emulator to perform these tests in-house during the product development stage. Constructing the emulator in digital technology is an attractive option for testing. This thesis approaches digital emulation by developing a digital model of the …
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Characterization of channel simulation method with Jitter and equalization effect on eye diagram
… the performance of transient brute force channel simulation and edge-based bit-by-bit simulation of a signal propagating through a channel. The efficient and accurate eye diagram generated from bit-by-bit mode simulation is presented. The eye diagram representation involving the jitter and …
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Implementation of Geometrically Based Single-Bounce Models for Simulation of Angle-of-Arrival of Multipath Delay Components in the Wireless Channel Simulation Tools, SMRCIM and SIRCIM
… have taken on the challenge to model wireless channels more accurately. These models are very useful for enhancing the design of all aspects of wireless communications. Smart antennas and systems used in position location are among the most popular new studies that require signal information …
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Transmit simulation and receive optimizations for 802.11b networks
The simulation presented in this paper provides an implementation of a full simulated transmit chain from packet encoding through base band modulation for the 802.11b wireless networking standard. This forward transmit chain is coupled with a physical channel simulation that can introduce a number …
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Accelerated Channel Operating Margin for Automated Context and Applications to Design Optimization
… a cornerstone of signal integrity metrics, Channel Operating Margin (COM) provides a highly desirable single figure of merit encapsulating performance guarantees and providing a variety of byproducts yielding insight on channel behavior. This poigniant metric has been anticipated as an …
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A Novel Chirp Slope Keying Modulation Scheme for Underwater Communication
… on analyzing the effectiveness of CSK through simulations using Matlab's Simulink for underwater communications. The procedure begins with modulating a chirp's slope by random binary data with a linear-down-slope chirp representing a 0, and a linear-up-slope chirp representing a 1. Each …
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Vector quantization applied to speech coding in the wireless environment
… an error correction scheme, as desired. Using a channel simulation tool such as BERSIM, the user can create bit error patterns to corrupt the data and then decode the speech for playback and analysis. The system is based upon the North American Digital Cellular (NADC) 8kbps Vector-Sum Excited …
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Development of a heterogeneous microwave network, fade simulation tool applicable to networks that span Europe
… development of these systems requires a joint channel simulation tool applicable to arbitrary, heterogeneous networks. This thesis describes the development of a network fade simulation tool, known as GINSIM, which can simulate joint dynamic fade time-series on heterogeneous networks of …
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New method of polar channel coding for reducing the bit error rate with low complexity in the F-OFDM underwater acoustic communications
… (UWAN), which is either manmade or natural. Channel coding is one of the effective BER reduction techniques that has been employed for reducing the BER. Nonetheless, high computational complexity is the main drawback of this technique. This thesis studies the UWAN in the shallow waters of …
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Distillation and simulation in quantum information
… of fundamental tasks, i.e., distillation and simulation in quantum information theory. We investigate these tasks in a unified framework of resource theory and focus on their computation and characterization with finite resources. Particularly we study the tradeoff among relevant parameters …
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Methods to reduce perturbation effects in compressive sampling
… to demonstrate the noise reduction. Furthermore, simulation results verify dCS method is effective in reducing the recovery noise. Secondly, an iterative basis refinement method is suggested for the reduction of the adverse effects from multiplicative perturbation. This method determines active …
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Methods to reduce perturbation effects in compressive sampling
… to demonstrate the noise reduction. Furthermore, simulation results verify dCS method is effective in reducing the recovery noise. Secondly, an iterative basis refinement method is suggested for the reduction of the adverse effects from multiplicative perturbation. This method determines active …
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System design and performance analysis of asymmetrically and symmetrically clipped optical (ASCO)-OFDM for IM/DD optical wireless communications
… optical signals are transmitted in a flat fading channel. Simulation results show that this proposed scheme can achieve better performances in terms of both power efficiency and symbol error rate (SER) when the optical power of transmitted signals is limited. In the second part, an improved …
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MIMO channel modelling and simulation for cellular and mobile-to-mobile
… as well. Reliable knowledge of the propagation channel obtained from channel measurements and corresponding channel models serve as the enabling foundation for the design and analysis of MIMO F2M and M2M systems. Furthermore, the development of accurate MIMO F2M and M2M channel simulation models …
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Machine learning approach for cascade-able nonlinear transceiver modeling and high speed link simulation
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01
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An improved code rate search scheme for adaptive multicode CDMA
… joint rate and power adaptation with perfect channel information in a multicode CDMA system. By specifying suitable boundary conditions and adaptively searching the optimal rate vectors, the search range can be narrowed down thereby significantly improving search complexity. We also build a …
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Data Compression with Relative Entropy Coding
Data compression forms the foundation of our Digital Age, enabling us to store, process and communicate more information than ever before. Over the last few years, machine learning-based compression algorithms have revolutionised the field and surpassed the performance of traditional methods. …