Search Results - "Schmalen, L."

Experimental demonstration of capacity increase and rate-adaptation by probabilistically shaped 64-QAM by Buchali, F., Bocherer, G., Idler, W., Schmalen, L., Schulte, P., Steiner, F.

“…We implemented a flexible transmission system operating at adjustable data rate and fixed bandwidth, baudrate, constellation and overhead using probabilistic…”
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On redundant index assignments for iterative source-channel decoding by Clevorn, T., Schmalen, L., Vary, P., Adrat, M.

“…Iterative source-channel decoding (ISCD) exploits the residual redundancy of source codec parameters by using the Turbo principle. A powerful improvement for…”
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On the Overshooting Effect in EXIT Charts of Iterative Source-Channel Decoding by Adrat, M, Antweiler, M, Schmalen, L, Vary, P, Clevorn, T

“…Source codec parameters determined by modern source encoders are usually very sensitive to noise on the transmission link. Natural residual redundancy of these…”
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A Generic Tool for Assessing the Soft-FEC Performance in Optical Transmission Experiments by Schmalen, L., Buchali, F., Leven, A., ten Brink, Stephan

“…We propose a tool for assessing the performance of soft-input forward-error-correction codes with recorded optical transmission experiments. This tool, which…”
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Experimental comparison between super-channel and sub-band single-carrier for 400 Gb/s and 800 Gb/s transport by Rios-Muller, R., Renaudier, J., Brindel, P., Jenneve, P., Mardoyan, H., Schmalen, L., Charlet, G.

“…124 GBaud single-carrier based on 4-sub-band transmitter is compared experimentally with 4×30.25 GBaud super-channel solution. Using QPSK and 16QAM in a 125…”
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EXIT Chart Based System Design for Iterative Source-Channel Decoding with Fixed-Length Codes by Schmalen, L., Adrat, M., Clevorn, T., Vary, P.

“…Audio-visual source encoders for digital wireless communications extract parameter sets on a frame-by-frame basis. Due to delay and complexity constraints…”
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Iterative Source-Channel Decoding With Reduced Error Floors by Schmalen, L., Vary, P.

“…Audio-visual source encoders for digital mobile communications extract parameters that-due to delay and complexity constraints-exhibit some residual…”
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1-Tb/s PDM-32QAM superchannel transmission at 6.7-b/s/Hz over SSMF and 150-GHz-grid ROADMs by Renaudier, J., Muller, R. Rios, Schmalen, L., Tran, P., Brindel, P., Charlet, G.

“…We report on transmission of 1Tb/s superchannel occupying 150 GHz bandwidth under constraints of legacy optical networks. Using standard 50-GHz grid WSS, we…”
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Improved Decoding of Binary and Non-Binary LDPC Codes by Probabilistic Shuffled Belief Propagation by Beermann, M., Schmalen, L., Vary, P.

“…Low-density parity-check (LDPC) codes have proved to be very powerful channel coding schemes with a broad range of applications. However, as maximum-likelihood…”
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Near-lossless compression and protection by turbo source-channel (de-)coding using irregular index assignments by Schmalen, L., Vary, P.

“…In this paper, we present a novel near-lossless compression scheme for scalar-quantized source codec parameters. The scheme is comparable to a Turbo source…”
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Space-time coding schemes for optical MIMO by Yejian Chen, Schmalen, L., Bulow, H., Leven, A., Ten Brink, Stephan

“…We compare different FEC coding/modulation approaches for increasing data rate over an optical MIMO communication link with respect to achievable rates and…”
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Trans-Atlantic field trial using probabilistically shaped 64-QAM at high spectral efficiencies and single-carrier real-time 250-Gb/s 16-QAM by Cho, J., Chen, X., Chandrasekhar, S., Raybon, G., Dar, R., Schmalen, L., Burrows, E., Adamiecki, A., Corteselli, S., Pan, Y., Correa, D., McKay, B., Zsigmond, S., Winzer, P., Grubb, S.

“…We transmitted probabilistically shaped 64-QAM at 7.46 b/s/Hz over a 5,523-km inservice EDFA-only amplified trans-Atlantic cable (5.68 b/s/Hz over a…”
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Hybrid ARQ with Incremental Redundant Index Assignments for Iterative Source-Channel Decoding by Clevorn, T, Schmalen, L, Vary, P, Adrat, M

“…Iterative source-channel decoding (ISCD) exploits the residual redundancy of source codec parameters by using the Turbo principle. In this paper we extend the…”
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Hybrid modulation formats outperforming 16QAM and 8QAM in transmission distance and filtering with cascaded WSS by Idler, W., Buchali, F., Schmalen, L., Schuh, K., Buelow, H.

“…We developed time-domain hybrid-modulation with adaptive symbolrates to optimize the reach and margin of WSS routed 400 Gb/s systems. Experimental comparisons…”
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1-Terabit/s net data-rate transceiver based on single-carrier Nyquist-shaped 124 GBaud PDM-32QAM by Rios-Muller, R., Renaudier, J., Brindel, P., Mardoyan, H., Jenneve, P., Schmalen, L., Charlet, G.

“…Using a transmitter based on sub-band synthesis, we generate and transmit over long-haul distance a record 1-Tb/s net data-rate single-carrier PDM-32QAM…”
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Practical approaches to 400G single-carrier submarine transmission by Rios-Muller, R., Renaudier, J., Schmalen, L., Charlet, G.

“…We review single-carrier 400 Gb/s transponder design and experiments. Requirements in terms of opto-electronic devices, modulation formats, error correction…”
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OFDM Turbo DeCodulation with exit optimized bit loading and signal constellations by Luders, H., Eschbach, B., Schmalen, L., Vary, P.

“…We propose the combination of orthogonal frequency division multiplexing (OFDM) and turbo decodulation (TDeC) - a multiple turbo process consisting of…”
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Graph-Based Turbo DeCodulation with LDPC Codes by Schotsch, B., Schmalen, L., Vary, P., Clevorn, T.

“…Turbo DeCodulation is the combination of iterative demodulation and iterative source-channel decoding in a multiple Turbo process. The receiver structures of…”
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Performance and advantages of 100 Gb/s QPSK/8QAM hybrid modulation formats by Buchali, F., Idler, W., Schmalen, L., Schuh, K.

“…We designed and compared time-domain hybrid-modulation formats with adaptive symbol rates and adaptive code rates to optimize the reach of variable grid…”
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Status and recent advances on forward error correction technologies for lightwave systems by Leven, A, Schmalen, L

“…Since the introduction of coherent transponders, forward error correction based on soft decision is now established in optical communication. In this tutorial,…”
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