Title :
Jitter limitations on multi-carrier modulation
Author :
Schrader, J.H.R. ; Klumperink, E.A.M. ; Nauta, B. ; Visschers, J.L.
Author_Institution :
MESA Res. Inst., Twente Univ., Enschede, Netherlands
Abstract :
A feasibility study is made of an OFDM system based on analog multipliers and integrate-and-dump blocks, targeted at Gb/s copper interconnects. The effective amplitude variation of the integrator output caused by jitter is explained in an intuitive way by introducing correlation plots. For a given rms jitter and error rate, high frequency carriers allow for less modulation depth than low frequency carriers. A jitter limit on the total system bit rate is calculated, which is a function of rms jitter, bandwidth, and specified system symbol error rate. It is concluded that, because of the high sensitivity to timing errors inherent in OFDM, traditional PAM systems with equal bandwidth and error rate are more feasible.
Keywords :
OFDM modulation; analogue multipliers; correlation methods; integrating circuits; interconnections; pulse amplitude modulation; timing jitter; OFDM system; PAM systems; analog multipliers; copper interconnects; correlation plots; integrate-and-dump blocks; integrator effective amplitude variation; modulation depth; multicarrier modulation jitter limitations; symbol error rate; timing error sensitivity; total system bit rate jitter limit; wireline communication; Bandwidth; Bit rate; Copper; DSL; Error analysis; Frequency; Jitter; OFDM modulation; Timing; Wires;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1466029
