Search for dissertations about: "fading diversity"

Showing result 1 - 5 of 51 swedish dissertations containing the words fading diversity.

2. 1. Verification of wireless communication performance and robustness for automotive applications

   Author : Mikael Nilsson; Kommunikationsteknologi; []
   Keywords : Vehicle-to-Vehicle; V2V; channel modeling; path loss; two-ray; obstruction; large scale fading; shadow fading; multiple links; diversity; correlation; over-the-air; OTA; multi-probe; multipath propagation simulator; fading emulation;

   Abstract : Today's test methods used for verifying the performance and robustness of automotive applications using wireless communication are often based on fieldtrails, which are time consuming, costly, and not repeatable. Therefore, there is an urgent need for new verification methods that can be performed in lab environment, where the realistic radio propagation environment can be emulated. READ MORE

4. 2. Quantized Feedback for Slow Fading Channels

   Author : Thanh Tùng Kim; Mikael Skoglund; Geir Øien; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fading channels; information rates; feedback communications; diversity methods; MIMO systems; power control; adaptive systems; quantization.; Telecommunication; Telekommunikation;

   Abstract : Two topics in fading channels with a strict delay constraint and a resolution-constrained feedback link are treated in this thesis. First, a multi-layer variable-rate single-antenna communication system with quantized feedback, where the expected rate is chosen as the performance measure, is studied under both short-term and long-term power constraints. READ MORE

5. 3. Diversity and Interference Aspects in the Downlink of Code Division Multiple Access Systems

   Author : Anders Persson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; orthogonal frequency division multiplexing; multi-carrier modulation; Rayleigh-fading channels; code division multiple access; frequency-selective channels; multiple access interference; diversity;

   Abstract : This thesis consists of six included papers and technical reports, plus an introduction. The topic studied is interference and diversity aspects in code division multiple access (CDMA) systems for mobile cellular communications. The focus in the papers is on the downlink - the communication link from the base station to the mobile terminal. READ MORE

6. 4. Constellation Design under Channel Uncertainty

   Author : Jochen Giese; Mikael Skoglund; Bertrand Hochwald; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Constellation design; diversity; fading channels; frequency-selective channels; joint channel estimation and data detection; multiple antennas; partial channel state information; wireless communication; Telecommunication; Telekommunikation;

   Abstract : The topic of this thesis is signaling design for data transmission through wireless channels between a transmitter and a receiver that can both be equipped with one or more antennas. In particular, the focus is on channels where the propagation coefficients between each transmitter--receiver antenna pair are only partially known or completetly unknown to the receiver and unknown to the transmitter. READ MORE

7. 5. Detection principles for fast Rayleigh fading channels using an antenna array

   Author : Anders Hansson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; iterative decoding; serially concatenated coding; adaptive antenna arrays; multiple antennas; APP algorithm; diversity reception; Rayleigh channels; correlation; sequence detection; fading channels;

   Abstract : .... READ MORE