Title :
A new 3D CAP system
Author :
Thng, Ian ; Li, Xinrong ; Ko, Chi Chung
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
In this paper, we demonstrate that the original 3D carrierless AM/PM (CAP) waveforms are fairly sensitive to quantisation noise. An in-depth investigation to obtain new waveforms that are noise insensitive is presented. The paper also presents numerical studies of the new 3D CAP system under non-ideal scenarios with quantisation noise and NEXT over lossy UTP channels. A comparative study with conventional 2D CAP systems leads to the important conclusion that the new 3D CAP system increases overall system throughput by 50% with very little performance degradation
Keywords :
amplitude modulation; crosstalk; digital subscriber lines; noise; phase modulation; twisted pair cables; 3D CAP line code; 3D CAP modulation; 3D carrierless AM/PM waveforms; NEXT; VDSL; lossy UTP channels; numerical studies; quantisation noise; throughput improvement; Adaptive filters; Circuit noise; Erbium; Finite impulse response filter; Matrix decomposition; Minimax techniques; Passband; Quantization; Sampling methods; Transmitters;
Conference_Titel :
TENCON 99. Proceedings of the IEEE Region 10 Conference
Conference_Location :
Cheju Island
Print_ISBN :
0-7803-5739-6
DOI :
10.1109/TENCON.1999.818412
