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  • Optical Bit Error Rate - Preface
    . threads brought together to a thin rope, is a relatively new technology that enables. bandwidth scalability to levels not possible before. The receiving end performs. the reverse function; it unravels the rope to its constituent colored threads. Each of these "threads " is modulated to bit rates up
  • Dynamic calibration for improving the speed of a parallel-aligned liquid-crystal-on-silicon display
    , and we propose a method allowing an increase of the frame rate while maintaining a maximum phase modulation of 2p. Experimental results of dynamic diffractive optical elements displayed on the SLM at a frame rate of 205 Hz show that the dynamic LUT improves the reconstruction quality.
  • Digital Signal Processing - Design Guide
    Based on combining ever increasing computer processing speed with higher sample rate processors, Digital Signal Processors (DSP s) continue to receive a great deal of attention in technical literature and new product design. The following section on digital filter design reflects the importance
  • Preface
    has arrived. The first generation of fiber-optic communication systems debuting in 1980 operated at a meager bit rate of 45 Mb/s and required signal regeneration every 10 km or so. However, by 1990 further advances in lightwave technology not only increased the bit rate to 10 Gb/s (by a factor of 200
  • rfRXD0420 ASK Receiver Reference Design
    applications The specifics of this receiver reference design are: * Single channel, fixed frequency at 433.92 MHz * ASK modulation * Signal rate: 4800 baud Complete schematics and PCB layout are given in Appendix A. Bill of Materials (BOM) are in Appendix B. Gerber files are available in the companion file
  • rfRXD0420 Receiver Module
    applications The specifics of the receiver module design are: Single channel, fixed frequency at 315 MHz and 433.92 MHz ASK modulation Signal rate: 4800 baud Schematics, PCB layout, and Bill-of-Materials (BOM) are provided in the following sections. Gerber files are available on the rfPIC Development Kit
  • Extending 2.4 GHz ZigBee Short Range Radio Performance with Skyworks Front-End Modules
    The IEEE Std 802.15.4TM-2003 [2] sets the requirements for the -85 dBm one percent. packet error ratio (PER) minimum sensitivity. The 2.4 GHz receiver link uses offset. quadrature phase-shift keying (O-QPSK) modulation with direct sequence spreading. spectrum (DSSS) techniques. The main benefit
  • DSP GMSK Modem for Mobitex and Other Wireless Infrastructures
    Mobitex is a packetized wireless 900-MHz wide area network (WAN) that allows mobile/portable subscribers to transfer data, including e-mail, through the growing national and international network infrastructure. The network operates with an 8-kbps data rate using GMSK.3 modulation. User terminals
  • Optimum Low Pass Filter Bandwidth for Generating Signals
    Optical Duobinary modulation has been illustrated to have higher spectral efficiency in high capacity transmission [1], and have better tolerance to chromatic dispersions due to narrower spectral bandwidth [2]. It also enjoys higher threshold for the onset of stimulated Brillouin scattering (SBS

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