—This paper considers the multiuser power control problem in a frequency-selective interference channel. The interference channel is modeled as a noncooperative game, and the existence and uniqueness of a Nash equilibrium are established for a two-player version of the game. An iterative water-filling algorithm is proposed to efficiently reach the Nash… (More)
—This paper describes the " vectored " transmission technique for digital subscriber line (DSL) systems, which utilizes user coordination at the central office or optical network unit. This method exploits the colocation of the downstream transmitters and of the upstream receivers, in order to achieve far-end crosstalk (FEXT) cancellation and perform… (More)
Crosstalk is the major source of performance degradation in next generation DSL systems such as VDSL. In downstream communications transmitting modems are co-located at the central office. This allows crosstalk precompensation to be employed. In crosstalk precompensation the transmitted signal is pre-distorted such that the pre-distortion destructively… (More)
This paper defines a rate maximization power allocation game in a frequency selective Gaus-sian interference channel, after assuming a suboptimal but pragmatic multiuser coding scheme. We show that the Nash equilibrium always exists in this game. We consider a distributed power allocation scheme [l, Section IV.], and provide a sufficient condition for the… (More)
Very high bit-rate digital subscriber line (VDSL) is the latest generation in the ongoing evolution of DSL standards. VDSL aims at bringing truly broadband access, greater than 52 Mbps in the downstream, to the mass consumer market. This is achieved by transmitting in frequencies up to 12 MHz. Operating at such high frequencies gives rise to crosstalk… (More)
— This paper presents a linear crosstalk precoder for VDSL that has a low run-time complexity. A lower bound on the data-rate of the precoder is developed and guarantees that the precoder achieves near-optimal performance in 99% of VDSL channels.
These experiments were designed to evaluate the hypothesis that fluoxetine-induced sexual dysfunction in female rats derived from disruption of neuroendocrine events that normally facilitate sexual behavior. If so, exogenous hormonal priming to ovariectomized rats should eliminate fluoxetine's effect. Ovariectomized rats were subchronically treated with 10… (More)
Crosstalk is a major problem in modern DSL systems such as VDSL. Many crosstalk cancellation techniques have been proposed to help mitigate crosstalk, but whilst they lead to impressive performance gains, their complexity grows with the square of the number of lines within a binder. In binder groups which can carry up to hundreds of lines, this complexity… (More)