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Quadrature Amplitude Modulation IP

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Compare 19 Quadrature Amplitude Modulation IP from 10 vendors (1 - 10)
  • Multi-channel Cable Modulator
    • The CMS0024 Multi-channel Cable Modulator encodes up to four separate transport streams for J83 or DVB-C.
    • The resulting QAM symbols are filtered and up-converted, each channel to its own frequency division multiplex (FDM) sub channel.
    • The IF channels are then combined output to the radio interface as a single I/Q sample stream for translation to the final RF frequency.
    Block Diagram -- Multi-channel Cable Modulator
  • Multi-mode QAM Demodulator
    • IF sub-sampling or I/Q baseband interface.
    • Variable ADC width support.
    • Single external clock source required.
    • Single external analogue loop for AGC.
    Block Diagram -- Multi-mode QAM Demodulator
  • Universal QAM/PSK Modulator
    • The CMS0004 Universal QAM/PSK Modulator is a flexible, high-performance, linear modulator core designed for a wide range of broadband applications including point-to-point and point-to-multipoint terrestrial, satellite and wireline transceiver systems.
    • It supports both continuous and burst-mode operation and its synchronous control interface readily accommodates physical-layer protocols that employ variable-rate frame structures.
    Block Diagram -- Universal QAM/PSK Modulator
  • M’ary Quadrature Amplitude Modulator IP in VHDL, FPGA and SDR
    • Fully verified and synthesized with source code and netlist, integration guide, license and manual
    Block Diagram -- M’ary Quadrature Amplitude Modulator IP in VHDL, FPGA and SDR
  • Quadrature Amplitude Modulation: Modulator and Demodulator
    • 1. Quadrature amplitude modulation Aside from increased channel capacity, QAM has various other advantages, which are stated below.
    • 2. One of the most significant advantages of QAM is its ability to sustain a high data rate. As a result, the carrier signal can carry a certain amount of bits. Because of these benefits, it is preferred in wireless communication networks.
    • 3. The noise immunity of QAM is quite strong. Noise interference is a bit low as a result of this.
    • 4. It has a low mistake probability value.
    Block Diagram -- Quadrature Amplitude Modulation: Modulator and Demodulator
  • OFDM Baseband Processor
    • Customized transmit and receive physical layer chains.
    • Fully synchronous design enabling high throughput TDD operation.
    Block Diagram -- OFDM Baseband Processor
  • Mobile Phase Recovering Equalizer
    • 17-tap complex-arithmetic LMS Channel Equalizer with adaptation bandwidth and leakage rate control as well as independent coefficient hold and reset controls
    • VV4 Quasi-Coherent Demodulator for signal phase recovery and differential detection
    • Integrated Symbol Slicer provides demodulated soft-decision outputs
    • AGC output controls in proportional and up/dn format for constant-modulus and phase-locked processing
    Block Diagram -- Mobile Phase Recovering Equalizer
  • Configurable Soft Output Demapper
    • Soft output demapper based on the LLR (Log Likelihood Ratio)algorithm.
    • Parameterized number of soft bits per symbol .
    • Parameterized architecture depending on supported modulation levels for optimum resources utilization.
    • Programmable modulation level.
    Block Diagram -- Configurable Soft Output Demapper
  • MMSE MIMO Detector
    • Adaptable to different transmitter/receiver antenna configurations (e.g., 2×2, 4×2 or 4×4).
    • Support for different modulation schemes at run-time (QPSK, 16-QAM, 64-QAM, 256-QAM)
    • QR decomposition included
  • High Performance VSB/QAM Demodulator Core
    • Input interface supports standard IF, low IF, and zero IF tuners.
    • 12-bit data interface provides dynamic range needed for effective suppression of adjacent channel interference.
    • Digital SAW filter reduces external part count.
    • Robust, proprietary acquisition algorithm for better than 100 millisecond acquisition time over a wide range of inputs.
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