Discrete cosine transform: algorithms, advantages, applications
Discrete cosine transform: algorithms, advantages, applications
FG-MC-CDMA System Performance in Multi-band Channels
CNSR '08 Proceedings of the Communication Networks and Services Research Conference
Multiple level orthogonal codes and their application in MC-CDMA systems
Computer Communications
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We propose the use of the discrete cosine transform (DCT) and discrete sine transform (DST), as well as their inverses, for spreading in multi-carrier (MC) code division multiple access (CDMA) systems. The DCT matrix works as a multi-level orthogonal (MLO) spreading code set. More generally, the DCT can be used in any spread spectrum system including single-carrier CDMA systems, MC-CDMA and MC direct sequence (DS) CDMA. The use of the DCT in MC-CDMA is shown to yield better system performance than traditional binary spreading codes.