Sökning: "MMSE Estimator"

Hittade 4 uppsatser innehållade orden MMSE Estimator.

  1. 1. Pilot Contamination and Mitigation Techniques in Massive MIMO Systems

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Vidit Saxena; [2014]
    Nyckelord :Multicell Systems; Massive MIMO; Pilot Contamination; LTE; Power Control; Resource Allocation; Channel Estimation; Precoding; Technology and Engineering;

    Sammanfattning : A multi-antenna base station (BS) can spatially multiplex a few terminals over the same bandwidth, a technique known as multi-user, multiple-input multiple-output (MU-MIMO). A new idea in cellular MU-MIMO is the use of a large excess of BS antennas to serve several single-antenna terminals simultaneously. LÄS MER

  3. 2. Receiver Design for Vehicular Communications

    Uppsats för yrkesexamina på avancerad nivå, KTH/Kommunikationsteori

    Författare :Olivier Christian Goubet; [2013]
    Nyckelord :;

    Sammanfattning : As the mobility of people increases, so does the density of vehicles on road networks. This comes at a cost, causing traffic congestions and raising the number of casualties. Wire- less communications  between vehicles will enable the development of Intelligent Transport Systems (ITS), which are expected to assist and manage road transportation. LÄS MER

  4. 3. Multiantenna Time Of Arrival Estimation

    L3-uppsats, KTH/Signalbehandling

    Författare :Ferran Torrent Fontbona; [2011]
    Nyckelord :;

    Sammanfattning : In the communications literature exist many documents that explain how to use spatial diversity to improve the performance of the system. However, the use of spatial diversity has not been studied in depth for GNSS, although in the last years the subject has received some interest, [6] and [20]. LÄS MER

  5. 4. Low Complexity Channel Estimation for OFDM Systems Based on LS and MMSE Estimators’

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Md. Jobayer Alam; Shaha Mohammed Goni Abed Sujan; [2010]
    Nyckelord :Channel Estimation; OFDM; LS Estimator; MMSE Estimator; SLS estimator; Complexity calculation;

    Sammanfattning : In this paper we investigate the block-type pilot channel estimation for orthogonal frequency-division multiplexing (OFDM) systems. The estimation is based on the minimum mean square error (MMSE) estimator and the least square (LS) estimator. We derive the MMSE and LS estimators’ architecture and investigate their performances. LÄS MER