Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"GMSK"”.
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Robust GMSK Demodulation Using Demodulator Diversity and BER Estimation
… demodulation of Gaussian Minimum Shift Keying (GMSK) signals, using demodulator diversity and real-time bit-error-rate (BER) estimation. GMSK is particularly important because of its use in promi- nent wireless standards around the world (GSM, DECT, CDPD, DCS1800, and PCS1900). The dissertation …
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Performance of GMSK and 7/4-DQPSK Modulations in Land Mobile Radio Channels
… application. Gaussian Minimum Shift Keying (GMSK) and 7r/4-Differential Quadrature Phase Shift Keying (7r/ 4-DQPSK) have been identified as the modulation methods for the European and the North American digital cellular systems respectively. The communication channel for the cellular systems …
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Practical considerations in the design of cellular digital packet data (CDPD) equipment
… of Gaussian Filtered Minimum Shift Keying (GMSK), and a detailed analysis of Reed-Solomon error correction codes.
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Simulation and performance analysis of Cellular Digital Packet Data
… CDPD uses Gaussian Minimum Shift Keying (GMSK) to send bursts of Reed-Solomon encoded information while channel hopping to avoid interfering with voice transmissions. This thesis assesses the performance of CDPD for different channel environments through simulation. Specifically, Gaussian …
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Error and erasure decoding for a CDPD system
… system employs Gaussian minimum shift keying (GMSK) as a modulation scheme and a Reed-Solomon code for error control to transmit high-quality data in the mobile and wireless environment. Most current CDPD receivers use errors only decoding of the Reed-Solomon code, although an improved errors …
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Analyzing Bit Error Rate using Universal Software Radio Peripheral (USRP) Software Defined Radio in Indoor and Outdoor Environments
… different modulation schemes like BPSK, QPSK and GMSK. Observed results show a series of time dynamics of BER which are not commonly studied in the literature.
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Design and Implementation of a Constant Envelope OFDM Waveform in a Software-Defined Radio Platform
… into a constant envelope signal, like FSK or GMSK, which can be amplified with non-linear power amplifiers at near saturation levels of efficiency. A brief analytical description of CE-OFDM and its suboptimal receiver architecture is provided in order to define and analyze the key parameters …
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Gallium nitride class-F power amplifier for UMTSWCDMA applications
… since GSM uses the constant envelope feature of GMSK (Gaussian Minimum Shift Keying) modulation which introduces phase variations only. In UMTS, a WCDMA system with QPSK modulation is used where both phase and amplitude variations are introduced by the modulation. The power amplifiers designed …
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Nuevas implementaciones digitales de sincronismos de BIT y portadora en Módem CPM
… que se pretende emplear en los canales (GMSK) y se ha tratado de obtener una estructura del receptor con la menor complejidad posible. Basándose en una descripción de la modulación mediante una aproximación que da lugar a un modelo lineal, se desarrolla un receptor lineal de estructura …