Sökning: "Rayleigh fading"
Visar resultat 11 - 15 av 57 avhandlingar innehållade orden Rayleigh fading.
11. On Soft Decoding and Robust Vector Quantization
Sammanfattning : This thesis considers vector quantization for noisy channels. Vector quantization (VQ) is an important technique for block-based source coding, with applications in, e.g., speech and image coding. LÄS MER
12. Polarization diversity and array signal processing in base station antennas
Sammanfattning : .... LÄS MER
13. Coding, Decoding and Multiuser Detection for Wireless CommunicationsCoding, Decoding and Multiuser Detection for Wireless Communications
Sammanfattning : In the strive for making the Universal Mobile Telecommunication System(UMTS) a reality, concepts and techniques are to be developed which canprovide both high system capacity and sufficient quality for the increasingnumber of mobile users. To obtain these objectives, powerful and flexibleerror control coding is needed, as well as efficient means for many usersto share the same commmication medium. LÄS MER
14. Fast Power Control to Counteract Rayleigh Fading in Cellular Radio Systems
Sammanfattning : In urban areas, cellular radio signals are subject to Rayleigh fading, which results in rapid changes in the channel gain. For TDMA-systems without the possibility of frequency hopping, this can cause severe problems for slowly moving cellular phones. LÄS MER
15. Coding and Iterative Decoding of Concentrated Multi-level Codes for the Rayleigh Fading Channel
Sammanfattning : In this thesis we present the concept of concatenated multilevel codes. These codes are a combination of generalized concatenated codes with multilevel coding. The structure of these codes is simple and relies on the concatenation of two or more codes of shorter length. LÄS MER