Interleaver and Deinterleaver VHDL Source Code

This page provides VHDL source code for an interleaver/deinterleaver.

An interleaver rearranges the order of encoded data bits before modulation and transmission. This process spreads out consecutive bits. By doing so, it enhances the effectiveness of error correction mechanisms, such as convolutional codes, in recovering the original data.

In WiMAX, a block interleaver is typically used. This method writes data into a matrix row wise and reads it out column wise (or vice versa). This process effectively dispersing the data across time domain and frequency domains.

A deinterleaver performs the inverse operation at the receiver end. It restores the original order of the interleaved bits, preparing them for error correction decoding.

VHDL Code For interleaving:

Download interleaving in VHDL code.

Summary

Both interleaving and deinterleaving are vital for enhancing the robustness of WiMAX communications, ensuring data integrity in the presence of channel impairments. Both interleaver and de-interleaver modules are used in wimax Physical layer transmitter and receiver respectively.

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