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 19 of 19 for “"Joint Detection"”.
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Advanced Joint Detection and Synchronization Techniques
L'abstract è presente nell'allegato / the abstract is in the attachment
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Overloaded Array Processing with Spatially Reduced Search Joint Detection
… how OAP is theoretically possible with the joint maximum likelihood (JML) receiver. However, for even a modest number of interfering signals, the JML receiverà Âs computational complexity quickly exceeds the real-time ability of any computer. This thesis proposes an iterative joint …
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Low complexity optimal joint detection for over-saturated multiple access communications
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Low complexity optimal joint detection for over-saturated multiple access communications
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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A Structural Approach to Multi-User Detection
Multi-user detection focuses on the problem of demodulating the information symbols of multiple users sharing a common communication medium, e.g., a wireless communication system. An extensive literature currently exists on the various aspects of multi-user detection, including linear detection, …
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Non-orthogonal multiple access using guessing random additive noise decoding aided macrosymbols
… GRAND-AM is a NOMA method that uses both joint multiuser detection and joint error correction decoding to handle multiple access interference (MAI) from the users of interest. Our method avoids codebook design and iterative decoding techniques, which are associated with other commonly …
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Multi-layered Space Frequency Time Codes
… Each layer consists of a space time code. The detection algorithms are based on multi-user detection theory. We consider joint, interference nulling and cancellation, and spatial sequence estimation algorithms. As part of joint detection algorithms, the sphere decoder is studied and its …
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Towards optimal capacity-achieving transceivers with photonic integrated circuits
… in multiple spatial modes and detecting jointly over the modes using a unitary transform prior to detection, one can in principle attain Holevo-limited channel capacity in the low mean photon number regime. Since the PNP offers dynamic reprogrammability, one can also, in principle, …
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Multiple-user quantum information theory for optical communication channels
… is employed in conjunction with coherent detection, the bosonic broadcast channel is equivalent to the classical degraded Gaussian broadcast channel whose capacity region is known. We draw upon recent work on the capacity region of the two-user degraded quantum broadcast channel to …
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Interference characterization and suppression for multiuser direct-sequence spread-spectrum system
… thesis we investigate efficient modulation and detection techniques for the uplink (i.e. transmission from mobile to base station) of a DS-CDMA network. Specifically, the thesis contains three parts. In the first part, we focus on the mobile transmitter. In particular, we evaluate and compare …
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Novel Approaches to Overloaded Array Processing
… the performance of spatially reduced search joint detection (SRSJD) with the application of an energy focusing transform (EFT), a complexity reducing front-end linear pre-processor. A new type of EFT, the Energy Focusing Unitary Relaxed Transform (EFURT) is developed. This transform …
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Joint Equalization and Decoding via Convex Optimization
… methods. Th first part considers the joint detection and decoding problem for low-density parity-check (LDPC) codes on finite-state channels (FSCs). Hard-disk drives (or magnetic recording systems), where the required error rate (after decoding) is too low to be verifiable by …
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Layout-aware mixture models for patch-based image representation and analysis
… a particular image-related task, such as detection, recognition and segmentation (analysis) as well as inpainting, summarization and colorization (synthesis). Since an image is usually comprised of millions of pixels, developing models in such a high dimensional space is not always …
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Stochastic adaptive estimation with applications to nonlinear control
… for the switched-linear plant problem. It uses a joint detection/estimation approach to give a very close approximation to the unrealizable optimum switched-linear estimator. The advantages and disadvantages of the two adaptive estimators are discussed, and it is found that a very reliable and …
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Overloaded Array Processing: System Analysis, Signal Extraction Techniques, and Time-delay Estimation
… signal extraction algorithms shows that joint detection schemes, coupled with antenna arrays, provide a solution for narrowband overloaded array problem where as traditional beamforming techniques fail. Simulation results in this thesis investigates three "promising" overloaded array …
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Extracting classical information from quantum states : fundamental limits, adaptive and finite-length measurements
… can achieve the theoretical lower bound of the detection error probability. Using this viewpoint, we give a natural generalization of the adaptive measurement to general Mary hypothesis testing problems. We also analyze the information capacity with adaptive measurement, and compare the result …
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Enhancing gait recognition with 3D markerless motion capture
… also enabled the development of more reliable joint detection algorithms which allow old model-based techniques, which previously used unreliable joint estimation, to be more effective for gait recognition. Model-based methods are potentially more robust than appearance-based methods, and …
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Near-capacity co-located and distributed MIMO systems
… complexity of Maximum Likelihood (ML)-style joint detection.<br/><br/>Furthermore, for the sake of taking full advantage of the available colocated MIMO channel capacity, we present a low-complexity iteratively detected space-time transmission architecture based on GMLST codes and IRregular …
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Long polyphase sequences for adaptive mmse detector in asynchronous cdma plc network with impulsive noise
… environments. This thesis avoids complex joint detection techniques at the receiver, such as multi– user detection and parallel interference cancellers, and it focuses on single–user detection techniques. Concerning single–carrier CDMA system, an MMSE receiver is selected due to its …