Essays about: "Multipath channel"

Showing result 21 - 25 of 42 essays containing the words Multipath channel.

  1. 21. Channel estimation in mobile wireless systems

    University essay from KTH/Signalbehandling

    Author : Pazi Alli Idd; [2012]
    Keywords : Time-variant channel; Discrete Prolate Spheroidal Sequences DPSS ;

    Abstract : The demands of multimedia services from mobile user equipment (UE) for achieving high data rate, high capacity and reliable communication in modern mobile wireless systems are continually ever-growing. As a consequence, several technologies, such as the Universal Mobile Telecommunications System (UMTS) and the 3rd Generation Partnership Project (3GPP), have been used to meet these challenges. READ MORE

  3. 22. Building and Evaluating a 3D Scanning System for Measurementsand Estimation of Antennas and Propagation Channels

    University essay from KTH/Elektroteknisk teori och konstruktion

    Author : Erik Johannes Aagaard Fransson; Tobias Wall-Horgen; [2012]
    Keywords : 3D field scanner; radio propagation channel; virtual array; MIMO; Angle-of-Arrival; regularization; inverse problem; L-curve; truncated singular value decompositions; successive interference cancellation; horn antenna; phase center.;

    Abstract : Wireless communications rely, among other things, on theunderstanding of the properties of the radio propagationchannel, the antennas and their interplay. Adequate measurementsare required to verify theoretical models and togain knowledge of the channel behavior and antenna performance. READ MORE

  4. 23. Spectrum Sensing of Cognitive Radio Networks using Amplify and Forward Relay over Correlated Nakagami-m Fading Channel

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Suman Dongol Maharjan; [2011]
    Keywords : Amplify-and-forward AF ; orthogonal space-time codes OSTBCs ; correlated Nakagami-m fading; detection probability; cognitive radio.;

    Abstract : In the last ten years, we have been witnessing the vast growth in wireless communications due to the popularity of many wireless devices, mobiles, smart phones etc. As a result, the demand for high data rates, bandwidth, and spectrum utilization has increased. READ MORE

  5. 24. Implementation of Collection Tree Protocol over WirelessHART Data-Link

    University essay from JTH, Data- och elektroteknik

    Author : Kiran Kumar Koneri; [2011]
    Keywords : WSN; WirelessHART; Time Synchronization Channel Hopping; Collection Tree Protocol; Reliability; Efficiency;

    Abstract : Wireless Sensor Networks (WSNs) are ad-hoc wireless networks for small form-factor embedded nodes with limited memory, processing and energy resources. Certain applications, like industrial automation and real-time process monitoring requires time synchronized reliable network protocol. READ MORE

  6. 25. Performance Evaluation of LTE Physical Layer Using SC-FDMA & OFDMA

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Abdul Samad Shaikh; Khatri Chandan Kumar; [2011]
    Keywords : OFDMA; SC-FDMA; LTE; BER; PAPR;

    Abstract : Since past few decades different types of cellular networks were launched and went successful on the radio links such as WiMAX, that became very popular because of its high data rate (70Mbps) and support for providing wireless internet services over 50km distance. The UMTS Long Term Evolution (LTE) is an emerging technology in the evolution of 3G cellular services. READ MORE