Sökning: "Frequency Band Reallocation"

Hittade 4 uppsatser innehållade orden Frequency Band Reallocation.

  1. 1. Time-Multiplexed Channel Switches for Dynamic Frequency Band Reallocation

    Master-uppsats, Linköpings universitet/Datorteknik

    Författare :Roland Stenholm; [2016]
    Nyckelord :parallel; interleaver; bitonic; sorter; clos; network; sts; switch; dfbr; dynamic; frequency; band; reallocation;

    Sammanfattning : A partially parallel reconfigurable channel switch is constructed for use in DFBR. Its permutation can be changed while running without any interruption in the streams of data. Three approaches are tried: one based on asorting network, one based on memories and multiplexers and one based on a Clos network. LÄS MER

  3. 2. VHDL Implementation of Flexible Frequency-Band Reallocation (FFBR) Network

    Master-uppsats, Institutionen för systemteknik

    Författare :Abrar Hussain Shahid; [2011]
    Nyckelord :20-channel FFBR network; 20-point FFT IFFT; complex multiplier; polyphase components; radix-2; radix-5;

    Sammanfattning : In digital communication systems, satellites give us world wide services. These satellites should effectively use the available bounded frequency spectrum and, therefore, to carry out flexible frequency-band reallocation (FFBR), on-board signal processing implementation on FFBR network is needed. LÄS MER

  4. 3. On Filter Bank Based MIMO Frequency Multiplexing and Demultiplexing

    Uppsats för yrkesexamina på grundnivå, Institutionen för systemteknik

    Författare :Amir Eghbali; [2006]
    Nyckelord :Frequency Band Reallocation; Filter Bank; Multirate Signal Processing; MIMO; Satellite Communications;

    Sammanfattning : The next generation satellite communication networks will provide multimedia services supporting high bit rate, mobility, ATM, and TCP/IP. In these cases, the satellite technology will act as the internetwork infrastructure of future global systems and assuming a global wireless system, no distinctions will exist between terrestrial and satellite communications systems, as well as between fixed and 3G mobile networks. LÄS MER

  5. 4. Transparent Satellite Switching using Flexible Frequency-band Reallocation

    Magister-uppsats, Institutionen för systemteknik

    Författare :Edgar Cámara Yagüe; José Manuel Menéndez Carretero; [2006]
    Nyckelord :downsampling; switching; upsampling; knowledge in impulse response of filters; white noise; modulator demodulator of QAM; symbol error rate; variance;

    Sammanfattning : The society expects a global interconected digital communication system offering multimedia services, information on demand and interchange of information with a high data rates and low cost. All this can not be realized with the terrestrial nets used nowadays cause it is necessary a high economic inversion to get a competitive capacity to interchange information between server and user. LÄS MER