Module interface for scramblers that convert input bit sequences into seemingly random output sequences of the same length. Scramblers are used in wireless communication systems to randomize data, avoid long sequences of identical bits, improve clock recovery, and reduce transmission errors. Implementations typically use generator polynomials and seed values to define the scrambling algorithm. This interface supports both scrambling and descrambling operations needed in encoders and decoders of various wireless protocols.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Implemented by

Name	Type	Description
AdditiveScrambler	compound module	The Scrambler module converts an input string into a seemingly random output string of the same length.

Used in compound modules

Name	Type	Description
ApskDecoder	compound module	Part of a simple hypothetical layered receiver. It computes the packet domain representation from the bit domain representation by applying the configured descrambling, forward error correction decoding, and deinterleaving.
ApskEncoder	compound module	Part of a simple hypothetical layered transmitter. It computes the bit domain representation from the packet domain representation by applying the configured scrambling, forward error correction encoding, and interleaving.
Ieee80211OfdmDecoder	compound module	This is the decoder module for the layered IEEE 802.11 OFDM PHY infrastructure (IEEE 802.11-2012, Clause 18).
Ieee80211OfdmEncoder	compound module	This is the encoder module for the layered IEEE 802.11 OFDM PHY infrastructure (IEEE 802.11-2012, Clause 18).

Properties

Name	Value	Description
display	i=block/tunnel

Source code

//
// Module interface for scramblers that convert input bit sequences into
// seemingly random output sequences of the same length. Scramblers are used in
// wireless communication systems to randomize data, avoid long sequences of
// identical bits, improve clock recovery, and reduce transmission errors.
// Implementations typically use generator polynomials and seed values to define
// the scrambling algorithm. This interface supports both scrambling and
// descrambling operations needed in encoders and decoders of various wireless
// protocols.
//
moduleinterface IScrambler
{
    parameters:
        @display("i=block/tunnel");
}

File: src/inet/physicallayer/wireless/common/contract/bitlevel/IScrambler.ned

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