Vendor: Commsonic Ltd Category: Modulation Demodulation

Multi-mode QAM Demodulator

The CMS0006 Universal QAM Demodulator is a 4th generation design that exploits Commsonic’s experience of QAM and OFDM systems for…

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Overview

The CMS0006 Universal QAM Demodulator is a 4th generation design that exploits Commsonic’s experience of QAM and OFDM systems for broadband terrestrial, satellite and cable modems.

The demodulator core has been designed to lock robustly in the presence of noise, frequency & timing offsets, static & dynamic multi-path channels and various other forms of interference. The demodulator core consists of three major sub modules: the Radio interface & decimator, Symbol timing recovery and the Equaliser.

The operation of the demodulator is fully automated by an internal state machine.

Key features

  • IF sub-sampling or I/Q baseband interface.
  • Variable ADC width support.
  • Single external clock source required.
  • Single external analogue loop for AGC.
  • Fully digital and automatic timing & frequency recovery - no VCXO or AFC required.
  • Fully-digital matched channel filter for robust performance in the presence of ACI.
  • Blind and decision-directed adaption algorithms ensure rapid convergence of AGC, PLL and equaliser sub-systems.
  • Automatic channel equalisation using LTE and DFE algorithms - signal quality estimate available.
  • Symbol rate recovery up to approximately 40% of the master clock frequency.
  • Large QAM support : BPSK, (O)QPSK, 8, 16, 32, 64, 128, 256.
  • Number of synthesis options to optimise speed (& therefore symbol rate) vs. area.
  • Software programmable symbol demapping.
  • Integrates with Commsonics CMS0004(QAM Modulator), CMS0003(FEC) and CMS0002(Viterbi) cores to form a complete broadband Modem.
  • Number of debug signals available - carrier, timing lock, frequency offset etc.

Block Diagram

CMS0006 block diagram

Files

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Specifications

Identity

Part Number
CMS0006
Vendor
Commsonic Ltd
Type
Silicon IP

Provider

Commsonic Ltd
HQ: UK
Commsonic is a design services company specialising in the development of ASIC, FPGA, DSP and board-level sub-systems for applications in wireless and wireline communications.

Our expertise is primarily in the gate- and power-efficient implementation of physical-layer (PHY) functions such as: modulation, demodulation, equalisation and channel coding but our experience encompasses all of the major elements of a modern baseband 'core' including the medium access control (MAC), voiceband DSP, mixed-signal interfaces, and embedded Cpu and software.

Our services are provided on a turnkey basis or as part of a support package attached to our licenced IP or tool products.

Commsonic's customers are typically semiconductor vendors and manufacturers of communications equipment that require leading-edge, Standards-based or proprietary PHY solutions but lack the internal resources or skills necessary to deliver projects against aggressive deadlines.

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Frequently asked questions about Modulation and Demodulation IP cores

What is Multi-mode QAM Demodulator?

Multi-mode QAM Demodulator is a Modulation Demodulation IP core from Commsonic Ltd listed on Semi IP Hub.

How should engineers evaluate this Modulation Demodulation?

Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this Modulation Demodulation IP.

Can this semiconductor IP be compared with similar products?

Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.

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