Sökning: "cdma"

Visar resultat 1 - 5 av 29 uppsatser innehållade ordet cdma.

2. 1. Digital Predistortion for Broadcast FM repeaters

   Uppsats för yrkesexamina på avancerad nivå, KTH/Signalbehandling

   Författare :Manne Tallmarken; [2011]
   Nyckelord :;

   Sammanfattning : This thesis presents the design and implementation of a memoryless and adaptive digital predistorter used to linearize a power amplier. Specically, it deals with the implementation of a so-called constantgain predistorter, based on a lookup table, on a digital signal processing board built around an FPGA. LÄS MER

4. 2. Evaluation of Word Length Effects on Multistandard Soft Decision Viterbi Decoding

   Master-uppsats, Linköpings universitet/Elektroniksystem

   Författare :Ahmed Salim; [2011]
   Nyckelord :Soft-Decision Viterbi; Tail-biting; Zero-tail; Direct Trace-back; Word Length effects; floating point quantization; BER analysis;

   Sammanfattning : There have been proposals of many parity inducing techniques like Forward ErrorCorrection (FEC) which try to cope the problem of channel induced errors to alarge extent if not completely eradicate. The convolutional codes have been widelyidentified to be very efficient among the known channel coding techniques. LÄS MER

5. 3. Evaluating the Catching-up Process of China’s Mobile Communication Industry

   Master-uppsats, KTH/Industriell ekonomi och organisation (Inst.)

   Författare :DAITIAN LI; [2011]
   Nyckelord :Catching-up; Leapfrogging; 3G; TD-SCDMA; Mobile industry; China; Technological capability; Market success;

   Sammanfattning : The mobile communication technology has evolved from the first generation (1G), when the first radiotelephone service was introduced in the US in late 1940s, to the third generation (3G). In each generation, different standards and technologies were promoted by technologically and economically advanced countries. LÄS MER

6. 4. The Plausibility of implementing Receive Antenna Diversity in the Downlink of CDMA450 system

   Master-uppsats, Högskolan i Gävle/Ämnesavdelningen för elektronik

   Författare :David Sayago Montilla; [2010]
   Nyckelord :antenna; diversity; cdma; forest;

   Sammanfattning : .... LÄS MER

7. 5. PERFORMANCE ANALYSIS ON MODULATION TECHNIQUES OF W-CDMA IN MULTIPATH FADING CHANNEL

   Master-uppsats, Blekinge Tekniska Högskola/Sektionen för Teknik (TEK)

   Författare :AUN TAHIR; FENG ZHAO; [2009]
   Nyckelord :telekommunikation; telecommunications; final thesis as part for master program in electrical engineering with emphasis on telecommunication;

   Sammanfattning : The transmission from base station to mobile or downlink transmission using M-ary Quadrature Amplitude modulation (QAM) and Quadrature phase shift keying (QPSK) modulation scheme are consider in W-CDMA system. We can analysis the performance of these modulation techniques when the system is subjected to AWGN and multipath Rayleigh fading are consider in the channel. LÄS MER