Overview
Convolutional encoding is a process of adding redundancy to a signal stream to provide error correction capability. The figure below shows a digital communication system using the Convolutional Encoder. The digital data stream (such as voice, image or any packetized data) is first convolutionally encoded, then modulated and finally transmitted through a channel.
Lattice’s Block Convolutional Encoder IP core is a parameterizable core for convolutional encoding of continuous or burst input data streams. The core allows different code rates and constraint lengths and supports puncturing. It can operate in continuous or block mode, whichever is required by the channel. In block mode, either Zero Flushing or Tail Biting codes can be generated. All the configurable parameters, including operation mode, termination mode, generator polynomials, code rate, and puncture pattern, can be defined by the user to suit the needs of the application. The code rate and the puncture pattern can also be varied through the input ports dynamically, providing further flexibility for the IP usage. Lattice’s Block Convolutional Encoder IP core is compatible with many networking and wireless standards that use convolutional encoding.
Learn more about Channel Coding IP core
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