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Journals and Conferences
Energy efﬁciency in cellular mobile radio networks has recently gained great interest in the research community. The development of more energy efﬁcient hardware and software components aside, effect of different deployment strategies on energy efﬁciency are also studied in the literature. The latter mainly consist of optimizing the… (More)
In the open access network model, the roles of the service provider and the network owner are separated, and the service providers get access to network and the end customers on fair and non-discriminatory conditions. This should be compared to the traditional vertically integrated business model where the service provider and the network operator are the… (More)
We investigate a digital back-propagation simplification method to enable computationally-efficient digital nonlinearity compensation for a coherently-detected 112 Gb/s polarization multiplexed quadrature phase shifted keying transmission over a 1,600 km link (20 x 80 km) with no inline compensation. Through numerical simulation, we report up to 80%… (More)
The authors propose a modulation format in which the phase of the signal pulses alternates, in order to reduce the intrachannel four-wave mixing. They demonstrate numerically that the performance of a 40-Gb/s transmission link can be substantially improved.
In this paper we present some recent work we performed on the socio-economic impact of fibre access networks (FTTH/FTTx). We summarise some results from a pre-study on the effects of fibre deployments in Sweden. Specifically, we list and quantify savings in data and telecommunications costs for Swedish local governments, estimate the added values for… (More)
The nonlinear effects of amplitude jitter and ghost pulse generation, which are present in strongly dispersion-managed optical communication systems can be suppressed by alternation of the phase of the bits. A physical explanation for this effect is given that shows that with suitably chosen phase modulations the processes that give rise to the nonlinear… (More)
We experimentally demonstrate the performance of back-propagation algorithm in coherently-detected 224Gb/s PM-16QAM system, over 250km of uncompensated link, and report 3.5 dB improvement in power tolerance with one back-propagation step for the entire link.
Increasing bandwidth demand drives the need for next-generation optical access (NGOA) networks that can meet future end-user service requirements. This paper gives an overview of NGOA solutions, the enabling optical access network technologies, architecture principles, and related economics and business models. NGOA requirements (including peak and… (More)
A scalable and reliable architecture for both a wavelength division multiplexing passive optical network and a hybrid wavelength and time division multiplexing passive optical network with self-healing capability is presented and evaluated. Our protection scheme is compatible with a cascaded arrayed waveguide grating that can accommodate an ultra-large… (More)
Original citation: Xu, Tianhua, Jacobsen, Gunnar, Popov, Sergei, Forzati, M., Mårtensson, J., Mussolin, M., Li, Jie, Wang, Ke, Zhang, Yimo and Friberg, A. T.. (2011) Frequency-domain chromatic dispersion equalization using overlap-add methods in coherent optical system. Journal of Optical Communications, 32 (2). pp. 131-135. Permanent WRAP URL:… (More)