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 8 of 8 for “"Channel Simulator"”.
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A programmable corrupted channel simulator.
Thesis: B.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1972
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Towards location-awareness in next generation wireless networks : a new approach based on channel state information
… by establishing a new approach relying on channel state information (CSI) measurements. In particular, we design an efficient joint message-passing (MP) localization algorithm, which consists of two layers: the transformation layer and the estimation layer. The transformation layer extracts …
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Performance evaluation of chirp spread spectrum system and Land Mobile Satellite System by computer simulation
… and for the Land Mobile Satellite System (LMSS) channel as a digital communications system. For the simulation of analog communications, a spread spectrum system using chirp techniques called ‘Coded Multiple Chirp Spread Spectrum’ was proposed as a simple, cost-effective alternative for …
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Simulation of adaptive equalization in two-ray, SIRCIM, and SMRCIM mobile radio channels
… better performances. A two-ray Rayleigh fading channel model is used to simulate the mobile channels. The results show that adaptive equalization can significantly improve the performance of mobile communications if the channel does not change too fast. The simulation shows that if the delay (T) …
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Radio Channel Measurements and Modeling for Smart Antenna Array Systems Using a Software Radio Receiver
… and software-defined radio development. A four-channel, wideband, software-defined receiver was developed to serve as a test bed for wideband measurements and antenna array experiments. This receiver was used to perform vector channel measurements in terrestrial and air-to-ground environments …
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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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Efficient narrow-band speech transmission over land mobile channels.
… addresses the problems of speech quality, and channel bandwidth efficiency, for speech transmission in mobile communications.In the first part, a flexible, real-time, programmable, mobile radio channel simulator is proposed. The conventional basic configuration of the simulator was augmented …
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Multi-dimensional direct-sequence spread spectrum multiple-access communication with adaptive channel coding
… systems. This scheme is known as adaptive channel coding, and gives a system the ability to firstly sense changes in conditions, and secondly, to adapt to these changes, exploiting the fact that under good channel conditions, a very simple or even no channel coding scheme can be used for …