Digital Communications Library

Communication library focused on channel equalization. It doesn't have a definite goal and will be updated as needed.

Current Modules

Adaptive Filers

• LMS, NLMS
• RLS

Equalizers

• Static Linear Equalizer: ZF, MMSE (Wiener) tap solution

Modulators

• BPSK

Random Variable (RV) Generators from Uniform Distribution

• Gaussian RV
• Rayleigh RV
• Nakagami-m (m can be choosen integer or half-integer)
• Gamma RV
• Generalized K RV

Examples

• End-to-end Linear Equalizer comparison. Used techniques: ZF, MMSE and LMS
• Equalizer comparison based discrete channel model (still developing)
• QPSK BER simulation on fading channel

Test

• Currently ipynb files are used for testing

TODO

• More equalizers, DFE, MLSE and Machine Learning based equalizers
• Using a test framework
• Various (de)modulators such as QPSK, PSK, DPQSK
• Add references

Known Issues

• In equalizer module, filter delay mechanism seems unhealty