- Electrical and Electronic Engineering - Research Publications
Electrical and Electronic Engineering - Research Publications
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ItemImpact of electrical band-limitation on transmission performance of CSRZ and CSRZ-DPSK modulation formats for high spectral efficiency DWDM systemsLee, DS ; Jing, Y ; Ko, JS ; Lee, MS ; Nirmalathas, A (IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, 2005-05)
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ItemOptimal Power Control Over Multiple Time-scale Fading Channels with Service Outage ConstraintsDey, S ; Evans, JS (Institute of Electrical and Electronics Engineers (IEEE), 2005-04)This paper considers the power-control problem for a fading channel in an information-theoretic framework. We derive power-control schemes to optimize ergodic capacity, outage capacity, and capacity with a service outage constraint. The novelty in the paper lies in the use of a two-time-scale fading process and its implications for the channel-state information available at the transmitter.
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ItemMeasurement-based band allocation in multiband CDMAAndrew, LLH (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-03)
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ItemPrioritized deflection routing in optical burst switching networksCameron, C ; Zalesky, A ; Zukerman, M (IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, 2005-05)
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ItemOptimal Power Control for Rayleigh-Faded Multiuser Systems with Outage ConstraintsPapandriopoulos, J ; Evans, JS ; Dey, S (Institute of Electrical and Electronics Engineers, 2005-11)How can we achieve the conflicting goals of reduced transmission power and increased capacity in a wireless network, without attempting to follow the instantaneous state of a fading channel? In this paper, we address this problem by jointly considering power control and multiuser detection (MUD) with outage-probability constraints in a Rayleigh fast-fading environment. The resulting power-control algorithms (PCAs) utilize the statistics of the channel and operate on a much slower timescale than traditional schemes. We propose an optimal iterative solution that is conceptually simple and finds the minimum sum power of all users while meeting their outage targets. Using a derived bound on outage probability, we introduce a mapping from outage to average signal-to-interference ratio (SIR) constraints. This allows us to propose a suboptimal iterative scheme that is a variation of an existing solution to a joint power control and MUD problem involving SIR constraints. We further use a recent result that transforms complex SIR expressions into a compact and decoupled form, to develop a noniterative and computationally inexpensive PCA for large systems of users. Simulation results are presented showing the closeness of the optimal and mapped schemes, speed of convergence, and performance comparisons.
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ItemThe waiting time distribution for a TDMA model with a finite buffer and state-dependent serviceNEUTS, M. ; GUO, J. ; ZUKERMAN, M. ; VU, H. ( 2005)
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ItemCalculation of bit-error rates and power penalties due to incoherent crosstalk in optical networks using Taylor series expansionsDods, SD ; Anderson, TB (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-04)