ROBUST MAC-LITE AND SOFT HEADER RECOVERY FOR PACKETIZED MULTIMEDIA TRANSMISSION

  • Leprovost Y.

This paper presents an enhanced permeable layer mechanism useful for highly robust packetized multimedia transmission. Packet header recovery at various protocol layers using MAP estimation is the cornerstone of the proposed solution. The inherently available intra-layer and inter-layer header correlation proves to be very effective in selecting a reduced set ...

SPECTRALLY EFFICIENT LONG-HAUL OPTICAL NETWORKING USING 112-GB/S POLARIZATION-MULTIPLEXED 16-QAM

  • Buhl L.
  • Doerr C.
  • Gnauck A.
  • Magarini M.
  • Winzer P.

We discuss the generation, wavelength-division-multiplexed (WDM) long-haul transmission, and coherent detection of 112-Gb/s polarization-division-multiplexed (PDM) 16-ary quadrature amplitude modulation (16-QAM) at a line rate of 14 Gbaud and spectral efficiencies beyond 4 b/s/Hz. We describe the (off-line) digital signal processing and blind filter adaptation algorithms used in our intradyne receiver ...

10 ,TIMES, 224-GB/S WDM TRANSMISSION OF 56-GBAUD PDM-QPSK SIGNALS OVER 1890 KM OF FIBER

  • Gnauck A.
  • Pupalaikis P.J
  • Raybon G.
  • Schnecker M.
  • Winzer P.

We demonstrate ten-channel wavelength-division-multiplexed (WDM) transmission of 56-Gbaud polarization-division-multiplexed quadrature phase-shift keying signals (i.e., at a line rate of 224 Gb/s) over 1890 km of fiber on a 100-GHz WDM grid (spectral efficiency of ~2 b/s/Hz). The coherent intradyne receiver digitizes the signal at 80 GSamples/s, and is followed by ...

EFFICIENT MEMBRANE GRATING COUPLERS ON INP

  • Doerr C.
  • Dupuis N.
  • Kopf R.
  • Liming Z
  • Long C
  • Weimann N.

We demonstrate an efficient coupler on InP using an etched grating on a suspended InGaAsP membrane. We measure a peak coupling efficiency of 40% (-4 dB) between a cleaved standard single-mode fiber and a conventional nonsuspended InGaAsP waveguide with a 3-dB bandwidth of ~45 nm.

PROPAGATION OVER PARABOLIC TERRAIN: ASYMPTOTICS AND COMPARISON TO DATA

  • Chizhik D.
  • Drabeck L.
  • Macdonald W.

Analysis of radio propagation over varying, clutter-covered terrain was carried out aiming at prediction of power received by a terminal immersed in clutter, with the transmitter placed above clutter. The need for such prediction arises, for example, in planning and assessing coverage and interference in radio communications. Following a general ...

MOS-COMPATIBLE SI-RING-ASSISTED MACH–ZEHNDER INTERFEROMETER WITH INTERNAL BANDWIDTH EQUALIZATION

  • Beattie J.
  • Carothers D.
  • Gill D.
  • Hill C.
  • Kamocsai R.L
  • Kun-Yii T
  • Patel S.
  • Pomerene A.
  • Rasras M.
  • White A.
  • Young-Kai C

We demonstrate, to the best of our knowledge, the first electrooptic ring-assisted Mach-Zehnder interferometric (RAMZI) modulator in a CMOS-compatible technology. The RAMZI modulator is manufactured on a CMOS-compatible platform and entirely fabricated in a commercial CMOS foundry. We demonstrate a small-signal 3-dB bandwidth >15 GHz in a silicon-based carrier-depletion modulator ...

NONUNIFORM LINEAR REGRESSION WITH BLOCK-WISE SAMPLE-MINIMUM PREPROCESSING

  • Hadzic I.
  • Morgan D.

We analyze the statistical properties of slope estimates obtained from linear regression with sample-minimum Erlang variates. The sample-minimum of sequential blocks has the effect of introducing nonuniform time samples. We show that this nonuniformity has negligible effect on the slope estimate variance, but introduces a spurious low-frequency component in the ...

GLOBAL CRITERIA TO ACCOUNT FOR TOLERANCE TO NONLINEARITIES OF HIGHLY DISPERSIVE SYSTEMS

  • Grellier E.

We numerically investigate the relevance of criteria such as the nonlinear phase or the inline cumulated dispersion to assess the tolerance to nonlinearities of highly dispersive optical transmission systems. For such systems, we propose and validate new rules to predict the performance of systems with different residual dispersion per span ...

DIGITAL PREDISTORTION FOR POWER AMPLIFIERS USING SEPARABLE FUNCTIONS

  • Jiang H.
  • Wilford P.

This paper is concerned with digital predistortion for linearization of RF high power amplifiers (HPAs). It has two objectives. First, we establish a theoretical framework for a generic predistorter system, and show that if a postdistorter exists, then it is also a predistorter, and therefore, the predistorter and postdistorter are ...

NON-BLOCKING CONDITIONS FOR EGS NETWORKS

  • Busi I
  • Pattavina A.

A class of multistage interconnection networks, known as extended generalized shuffle (EGS) network, is here considered; it is built with arrays of elementary switching elements, interconnected by shuffle patterns, and external splitters and combiners. New results are given here that reduce the splitter fanout required to make the network strictly ...

21 DB GAIN 87 LOW-NOISE AMPLIFIER USING 0.18?M SIGE BICMOS

  • Baeyens Y.
  • Chen Y.
  • Lin J.

The performance of a single-ended two-stage high gain low-noise amplifier (LNA) fabricated in a low-cost 200 GHz fT and fmax 0.18 ¿m SiGe BiCMOS technology is presented. The LNA shows a maximum power gain of 21 dB at 87 GHz with a 3 dB bandwidth from 81 to 92.6 GHz. ...

DECENTRALIZED DYNAMIC SPECTRUM ALLOCATION BASED ON ADAPTIVE ANTENNA ARRAY INTERFERENCE MITIGATION DIVERSITYTRANSMISSION

  • Abramovich Y.
  • Kuzminskiy A.

A new class of decentralized dynamic spectrum allocation (DSA) algorithms that exploit adaptive antenna array interference mitigation (IM) diversity at the receiver, is proposed for interference-limited environments with high level of frequency reuse. The system model consists of base stations (BS) that can optimize uplink frequency allocation to their subscriber ...

PHOTOEMISSION OF SI 1S?2PZ TRANSITION IN GAAS/ALGAAS QUANTUM WELL FOR ZERO-DIMENSIONAL STATES INFRARED DETECTION

  • Antoni T
  • Berger V.
  • Carras M.
  • Marcadet X.
  • Vinter B.

Intersubband absorption in a GaAs/AlGaAs quantum well usually happens between two two-dimensional (2D) electronic states. However for sufficiently low doping levels, the electrons can be entirely distributed on the silicon localized states. We demonstrate that depending on the temperature, absorption in such structures is dominated either by 2D quantum well ...

REAL-TIME 2.5 GS/S COHERENT OPTICAL RECEIVER FOR 53.3-GB/S SUB-BANDED OFDM

  • Chandrasekhar S.
  • Kaneda N.
  • Qi W
  • Shieh W.
  • Xiang L
  • Young-Kai C

A real-time receiver for the coherent optical orthogonal frequency-division multiplexing (CO-OFDM) detection is realized in a field-programmable gate array (FPGA). Each building block of the CO-OFDM receiver, such as symbol synchronization, channel estimation, and phase estimation is described and discussed in respect of special technical requirements of real-time implementation. The ...

ON SIGNAL-TO-NOISE RATIO-ASSISTED CROSSTALK CHANNEL ESTIMATION IN DOWNSTREAM DSL SYSTEMS

  • Guenach M.
  • Louveaux J.
  • Maes J.
  • Peeters M.
  • Vandendorpe L.
  • Whiting P.

Downstream (DS) crosstalk channels of digital subscriber line systems can be estimated based on the reported signal-to-noise ratio (SNR). In the case of an already active victim line (VL) impacted by the joining of a new disturber line (DL), sending perturbing signals on the VL and reporting the SNRs allow ...

ROOM-TEMPERATURE CONTINUOUS-WAVE METAL GRATING DISTRIBUTED FEEDBACK QUANTUM CASCADE LASERS

  • Carras M.
  • Marcadet X.
  • Parillaud O.

We report on the design and elaboration of continuous wave (cw) distributed feedback quantum cascade lasers (QCLs) using a simple metal grating approach without epitaxial regrowth, neither for the grating nor for the thermal extraction. Room temperature cw single monomode QCLs with 30 dB side mode suppression ratio are demonstrated ...

DIPLEXER WITH INTEGRATED FILTERS AND PHOTODETECTOR IN GE–SI USING GAMMA -{X} AND GAMMA -{M} DIRECTIONS IN A GRATING COUPLER

  • Doerr C.
  • Earnshaw M.
  • Long C
  • Rasras M.
  • Weiner J.

We demonstrate a central-office-type diplexer in which the filter and photodetector are monolithically integrated on a silicon-on-insulator substrate. The photonic integrated circuit receives a 1577-nm signal from an external laser and sends it to the fiber link using a two-dimensional grating coupler. The same grating coupler receives a 1270-nm signal ...

CAPACITY OF CHANNELS WITH FREQUENCY-SELECTIVE AND TIME-SELECTIVE FADING

  • Caire G.
  • Shamai S.
  • Tulino A.

This paper finds the capacity of single-user discrete-time channels subject to both frequency-selective and time-selective fading, where the channel output is observed in additive Gaussian noise. A coherent model is assumed where the fading coefficients are known at the receiver. Capacity depends on the first-order distributions of the fading processes ...

MODELING THE PERFORMANCE OF FDL BUFFERS WITH WAVELENGTH CONVERSION

  • Laevens K.

In optical burst switching and optical packet switching, contention of bursts (or packets) can be dealt with most effectively through a combination of wavelength conversion and optical buffering. While this is generally accepted in the optical networking community, and validated through simulation, analytic performance results for optical buffers were limited ...

A CORRELATION FOR THE DETECTION OF TIME AND FREQUENCY OFFSETS

  • Jeanclaude I
  • Purohit V
  • Wilford P.

A correlation is proposed for use to detect time and frequency offsets in a received signal in a digital transmission system. Applications include time and frequency synchronization in a single frequency network; pre-distortion for high power amplifiers in a transmitter. The correlation is formed with the products of two pairs ...