Real-valued error control coding by using DCT
Ja‐Ling Wu, Jiun Shiu · IEE Proceedings I Communications Speech and Vision · 1992
The discrete cosine theorem (DCT)- based real-valued linear code is derived for the first time in the literature. A BCH-like subclass of DCT linear codes is also developed, for which fast decoding algorithms exist. It is shown that the DCT-based error control codes proposed in the paper can be viewed as a bridge to link the fields of source coding and channel coding.