Alcatel-Lucent

About: Alcatel-Lucent is a based out in Stuttgart, Germany. It is known for research contribution in the topics: Signal & Network packet. The organization has 37003 authors who have published 53332 publications receiving 1430547 citations. The organization is also known as: Alcatel-Lucent S.A. & Alcatel.

2.5 Tb/s (64/spl times/42.7 Gb/s) transmission over 40/spl times/100 km NZDSF using RZ-DPSK format and all-Raman-amplified spans

Abstract: We report 2.5 Tb/s (64 /spl times/ 42.7-Gb/s) WDM transmission over 4000 km (forty 100-km spans) of non-zero dispersion-shifted fiber. This capacity /spl times/ distance record of 10 petabit-km/s for 40-Gb/s systems is achieved in a single 53-nm extended L band using return-to-zero differential-phase-shift-keyed modulation, balanced detection, and distributed Raman amplification.

Space division multiplexing (SDM) for OFDM systems

Abstract: A promising solution for significant increase of the bandwidth efficiency and transmission capacity is the exploitation of the spatial dimension, by using space division multiplexing (SDM). SDM algorithms exploit the richly scattered (indoor) wireless channel by using multiple transmit and receive antennas. A new SDM technique, called maximum likelihood decoding (MLD) is proposed. The superior SNR performance of MLD compared to other SDM techniques is proven. To obtain an even higher bit rate and make the system more robust against intersymbol interference, (single-carrier) SDM is successfully applied to the spectrum efficient multi-carrier transmission technique orthogonal frequency division multiplexing (OFDM).

High Performance Thermoelectric Tl 9 BiTe 6 with an Extremely Low Thermal Conductivity

Abstract: $\mathrm{Tl}{}_{9}\mathrm{BiTe}{}_{6}$ exhibits a thermoelectric figure of merit of $\mathrm{ZT}\ensuremath{\sim}1.2$ around 500 K, which significantly exceeds the state-of-the-art materials in this temperature range. The extraordinary thermoelectric performance is mainly due to the extremely low thermal conductivity of $\mathrm{Tl}{}_{9}\mathrm{BiTe}{}_{6}$ [ $0.39\mathrm{W}/(\mathrm{m}\ifmmode \dot{}\else \.{}\fi{}\mathrm{K})$ at 300 K]. In fact, the minimum lifetime of the phonons has to be taken into account to describe the thermal conductivity data.