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 11 of 11 for “"Non-Coherent Detection"”.
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Differential modulation and non-coherent detection in wireless relay networks
… acquiring fading channels information for coherent detection is more challenging than in the traditional point-to-point communications. To bypass the requirement of channel information, differential modulation together with non-coherent detection can be deployed. This thesis is concerned …
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Channel estimation for Gigabit Multi-user MIMO-OFDM Systems
The fundamental detection problem in fading channels involves the correct estimation of transmitted symbols at the receiver in the presence of Additive White Gaussian Noise (AWGN). Detection can be considered when the receiver is assumed not to know the channel (non-coherent detection), or …
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Synchronization in Impulse Based Ultra Wideband Systems
… short pulse duration and very low duty cycle. Coherent detection of ultra wide-band signals requires complex channel estimation algorithms. In impulse based UWB systems, suboptimal receivers that require no channel estimation are proposed for low data rate applications using non coherent …
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Low-bit-rate joint source-channel decoding aided wireless video communications
… on both robust video transmission, iterative detection and video telephony, there is a paucity of up-to-date research studies on the unified treatment of the topic of near capacity multimedia communication systems using iterative detection aided joint source-channel decoding employing …
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Optoelektroniniai terahercinio dažnių diapazono komponentai iš puslaidininkių su giliais centrais /
… THz bursts generation system was tested in coherent and non-coherent detection modes in THz imaging experiment. Images of various objects in the frequency range from 0.1 THz to 1 THz were obtained.
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Terahertz optoelectronics components of semiconductor materials with deep defects /
… THz bursts generation system was tested in coherent and non-coherent detection modes in THz imaging experiment. Images of various objects in the frequency range from 0.1 THz to 1 THz were obtained.
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Coherent versus non-coherent space-time shift keying for co-located and distributed MIMO systems
… Multiple-Output (MIMO) systems using both coherent and non-coherent detection. Furthermore, we conceive new serially-concatenated turbo-coding assisted STSK arrangements for the sake of approaching the channel capacity limit, which are designed with the aid of EXtrinsic Information Transfer …
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Beamforming and scan pattern performance evaluation of rotating maritime multi-beam phased array surveillance radar
… different beamforming and scan patterns on the detection performance of different possible targets in the maritime environment per antenna rotation. MATLAB, with various Phased Array Toolbox objects, was used as the platform to create the simulation model. A wide variety of variables were …
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Low-complexity near-optimum detection techniques for non-cooperative and cooperative MIMO systems
… various reduced-complexity near-optimum Sphere Detection (SD) algorithms, including the well-known depth-first SD, the K-best SD as well as the recently proposed Optimized Hierarchy Reduced Search Algorithm (OHRSA), followed by comparative studies of their applications, characteristics, …
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Near-capacity MIMOs using iterative detection
… Spreading (DSTS) scheme is designed that employs non-coherent detection. Additionally, in order to maximise the coding advantage of DSTS, it is combined with Sphere Packing (SP) modulation. The related capacity analysis shows that the DSTS-SP scheme exhibits a higher capacity than its counterpart …
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Ambient Backscatter Communication Systems: Design, Signal Detection and Bit Error Rate Analysis
… of ambient backscatter systems, including non-coherent detection and encoding schemes, and investigate techniques such as multiple antenna interference cancellation and frequency-shift backscatter to improve the bit error rate performance of the designed ambient backscatter systems. First, …