Essays about: "Multipath channel"

Showing result 16 - 20 of 42 essays containing the words Multipath channel.

1. 16. An IEEE 802.15.4 Packet Error Classification Algorithm : Discriminating Between Multipath Fading and Attenuation and WLAN

   University essay from Mittuniversitetet/Avdelningen för informations- och kommunikationssystem

   Author : Nan Chen; [2014]
   Keywords : WSN; error discrimination; MFA; WLAN interference; F-BER; RSSI; LQI; CC2420;

   Abstract : In wireless sensor networks, communications are usually destroyed by signal attenuation, multipath fading and different kinds of interferences like WLAN and microwave oven interference. In order to build a stable wireless communication system, reactions like retransmission mechanisms are necessary. READ MORE

3. 17. Implementation Of Wireless Channel Propagation Models In OPNET

   University essay from Avdelningen för informations- och kommunikationssystem

   Author : Zhijuan Guo; [2013]
   Keywords : OPNET; channel model; power fading; WSN;

   Abstract : In recent times, there has been a significant amount of research regarding the physical layer of wireless communications . The part of the physical layer, which cannot be ignored, is channel propagation. Different environments have different channels. READ MORE

4. 18. Design of Indoor Positioning System Based on IEEE 802.15.4a Ultra-wideband Technology

   University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

   Author : Jinkang Cen; [2013]
   Keywords : ;

   Abstract : Global Positioning System (GPS) has revolutionized the way we navigate and get location-based information in the last decade. Unfortunately the accuracy of civilian GPS is still remaining in meter level and it does not work well in indoor environment, which is a major drawback for applications such as autonomous vehicle, robot machine and so on. READ MORE

5. 19. Maximum Capacity Antenna Design for an Indoor MIMO UWB Communication System

   University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Author : Ran Liu; Hao Liu; [2012]
   Keywords : MIMO; UWB; Antenna Design; In-door Communication and Capacity Analysis;

   Abstract : Ultra-wideband (UWB) offers a high data rate transmission, however it only can be used in short distance communication due to its low power restricted by regulations, therefore it is applicable for an indoor scenario. Within an enclosed (indoor) scenario, there exist many possible multipaths of electromagnetic waves which lead to an effect known as fading [Big07]. READ MORE

6. 20. Simulation of wireless communications in underground tunnels

   University essay from Högskolan i Gävle/Avdelningen för elektronik, matematik och naturvetenskap

   Author : Shabai He; [2012]
   Keywords : time dispersion channels; intersymbol interference; adaptive equalization;

   Abstract : The new released 4G standard wireless communication reminds us that higher transmission data rate and more reliable service are required urgently. However, to fulfill the demand can face problems in a complex environment like mines. READ MORE