Sökning: "umts gsm"

Visar resultat 1 - 5 av 29 uppsatser innehållade orden umts gsm.

  1. 1. Design of Cellular and GNSS Antenna for IoT Edge Device

    Magister-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Ioannis Broumas; [2019]
    Nyckelord :IoT; Internet of Things; Edge device; LTE; 4G; LTE-M1; Antenna; Antenna System; Narrow Band IoT; NB-IoT; Plannar Antennas; GPS; PCB; multiband antenna;

    Sammanfattning : Antennas are one of the most sensitive elements in any wireless communication equipment. Designing small-profile, multiband and wideband internal antennas with a simple structure has become a necessary challenge. LÄS MER

  3. 2. Mobile Phone Antenna Design

    Kandidat-uppsats, Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

    Författare :Khalid Saif; Nazem Alsmadi; [2015]
    Nyckelord :mobile phones antenna; mobile; antenna; mobile phone antenna design; SAR; PIFA; PIFA antenna design; GPS antenna design; wideband antenna design;

    Sammanfattning : This thesis focuses on mobile phones antenna design with brief description about the historical development, basic parameters and the types of antennas which are used in mobile phones. Mobile phones antenna design section consists of two proposed PIFA antennas. LÄS MER

  4. 3. 4G LTE : eMBMS with MBSFN Service Simulation using OPNET

    Kandidat-uppsats, Mittuniversitetet/Avdelningen för informations- och kommunikationssystem

    Författare :Abdelrahman Walid; [2014]
    Nyckelord :3G; 3GPP; 4G; CoMP; CSI; CSI-IM; CSI-RS; eMBMS; eNB; EPC; EPS; E-UTRAN; GSM; HSPA; IGMP; IGRP; ITU-T; LTE; LTE-A; MAC; MBSC; MBSFN; MCE; MCS; MFN; MME; OFDM; OFDMA; OPNET; OSPF; PDN-GW; PDSCH; PMCH; PUCCH; PUSCH; QoS; SAE; SC-FDMA; S-GW; TDD; TD-SCMDA; UE; UTMS; WCDMA.;

    Sammanfattning : Long Term Evolution (LTE) known in the market as 4G LTE, it is an evolution of the GSM/UMTS standard. The overall aim of LTE was to provide a new radio access technology focusing on packet-switched data only. LTE has provided a new peak download rates, low data transfer latencies, and improved the support for mobility. LÄS MER

  5. 4. UMTS Positioning Methods and Accuracy in Urban Environments

    Master-uppsats, Kommunikations- och transportsystem; Tekniska högskolan

    Författare :Yasir Ali Baloch; [2011]
    Nyckelord :UMTS network; Mobile Positoining; Database Correlation Method; Location Accuracy;

    Sammanfattning : During the 2nd generation Global System for Mobile Communications (GSM) mobile communication, the focus of the mobile positioning was mostly on call setup and messaging. But the evolution of the 3rd generation Wideband Code Division Multiple Access (WCDMA) has changed the focus of mobile positioning. LÄS MER

  7. 5. Integration of MIMO antenna with a fully 180o differential hybrid coupler

    Master-uppsats, Institutionen för teknik och naturvetenskap; Tekniska högskolan

    Författare :Raj kumar Kallem; Sampath kumar Veerabomma; [2011]
    Nyckelord :;

    Sammanfattning : This thesis work proposes the integration of MIMO antenna (i.e., two bowtie dipole antennas) with a fully differential 180o hybrid coupler in the frequency range of 0.7-3 GHz which falls in the Ultra High Frequency (UHF) band as per the spectrum allocated by International Telecommunication Union (ITU). LÄS MER