Bandlimited Power-Efficient Signaling and Pulse Design for Intensity Modulation
Artikel i vetenskaplig tidskrift, 2014

In this paper, a new method for power-efficient intersymbol interference-free transmission over the bandlimited intensity-modulation direct-detection channel is proposed. A new time-varying bias signal is added to the transmitted signal to make it nonnegative and provide a more power-efficient transmission than the previously considered constant bias. To exploit the benefits of the new signaling method, Nyquist and root-Nyquist pulses suitable for the use with this kind of bias are designed using two different methods. In the first method, new pulses are obtained by adding Nyquist pulses in the time domain with different combining coefficients, whereas in the second method, the pulses are obtained by the design of their frequency response. Analytical expressions for the asymptotic optical power efficiency and symbol error rate of the proposed schemes are derived and evaluated. At a spectral efficiency of 1~b/s/Hz, using on-off keying modulation and the proposed bias signal and pulses, up to 0.628 dB gains in asymptotic power efficiency can be achieved compared to the previously best known signaling scheme, which is based on squared sinc pulse shaping.

fiber-optical communications

Nyquist pulses

ISI-free signaling

free-space optical communications

root-Nyquist pulses

Författare

Cristian Bogdan Czegledi

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

M Reza Khanzadi

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Erik Agrell

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

IEEE Transactions on Communications

0090-6778 (ISSN)

Vol. 62 9 3274-3284 6880818

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

Ämneskategorier

Kommunikationssystem

DOI

10.1109/TCOMM.2014.2349909

Mer information

Senast uppdaterat

2018-03-29