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Showing 1 to 6 of 6 for “"carrier recovery"”.
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An Investigation of Carrier Recovery Techniques for PSK Modulated Signals in CDMA and Mulipath Mobile Environments
The challenge of carrier recovery for digitally phase modulated, suppressed-carrier signals has been the target of much attention in mobile radio system design for many years. Code division multiple access (CDMA) cellular systems are now being deployed in mobile environments, and the performance of …
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Ultrafast nonlinear optical properties of passive and active semiconductor devices
Nonlinear optical properties and ultrafast carrier dynamics of slab-coupled optical waveguide amplifiers, silicon nanowaveguides, and III-V semiconductor saturable Bragg reflectors are studied. The limits imposed by two photon absorption and free-carrier absorption on the gain and output powers of …
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Fast all-digital carrier synchronization techniques for linear modulation formats
… (FF) and decision-directed (DD) feedback (FB) carrier recovery (CR) techniques based on oversampling, suitable for linear modulation schemes ( M -ary phaseshift-keying ( M -PSK) and M -ary quadrature amplitude modulation ( M -QAM)). Carrier synchronization is studied because, in passband …
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Modeling and Analysis of Synchronization Schemes for the TDMA Based Satellite Communication System
… in satellite communications. Although single-carrier (SC) modulation techniques has been mostly employed in the TDMA satellite communication system, multi-carrier modulation techniques, like orthogonal frequency division multiplexing (OFDM), are also promising candidates for the future high …
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Interaction of additive and quantization noises in digital PLLs
… are capable of signal demodulation, phase and carrier recovery, frequency synthesis, and clock synchronization. Continuous-time PLLs are a mature area of study, and have been covered in the literature since the early classical work by Viterbi [1] in the 1950s. With the rise of computing in …
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All-semiconductor High Power Mode-locked Laser System
… of all-optical timing synchronization (clock recovery) using multi-section gain-coupled distributed-feedback (MS-GC DFB) lasers are discussed. A record speed of 180-GHz timing synchronization has been demonstrated using this device. An all-optical carrier synchronization (phase and …