Lantiq

About: Lantiq is a company organization based out in Neubiberg, Germany. It is known for research contribution in the topics: Signal & Frame (networking). The organization has 273 authors who have published 304 publications receiving 2407 citations.

Data Transmission And Retransmission

Abstract: A method transmits data. The method includes transmitting a series of data unit, receiving a retransmission request indicating a plurality of corrupt data units in the transmitted data units which were not received correctly, and retransmitting the corrupted data units.

G.HNEM: the new ITU-T standard on narrowband PLC technology

Abstract: Narrowband power line communications (NB-PLC) systems operating in the frequency range 3-500 kHz were developed and used in the past few decades for telecommunications, metering, control, and automation. Recently, OFDM-based NB-PLC solutions known as G3 and PRIME came to the market after a long monopoly of single-carrier technologies, offering higher bit rates, robustness, and flexibility, which are vital for smart grid applications. However, it was realized that an international standard is important to ensure worldwide interoperable products and avoid market fragmentation. In the beginning of 2010, the IEEE Standards Association and ITU-T started standardization of NBPLC technologies based on OFDM, launching the P1901.2 and G.hnem projects, respectively. This article gives a technical overview of the ITU-T G.hnem standard, which defines a unified NB-PLC OFDM-based technology targeting multiple smart grid applications: smart metering, distributed automation, in-home energy management, generic home automation, car charging, and others, using IPv6 as the main networking protocol. ITU-T Recommendations G.9955 (G.hnem physical layer) and G.9956 (G.hnem data link layer) were consented for approval in February 2011; their final approval is expected in December 2011.

On noise modeling for power line communications

Abstract: This paper reviews existing noise models including both background and impulsive noise for the in-home PLC scenario, highlighting similarities and differences. With reference to the impulsive noise, it is shown that a simple model, in the frequency band up to 100 MHz, can be derived by considering the noise generated at the source and taking into account the effect of the channel. Capacity considerations are then made, comparing erasure decoding strategies or full decoding strategies.

The ITU-T's new g.vector standard proliferates 100 mb/s dsl

Abstract: This article explores the recently issued ITUT G.vector (G.993.5) that allows expanded use of 100 Mb/s DSL. A tutorial description on G.vector's crosstalk noise reduction methods leads to specific projections and measurements of expanded DSL 100 Mb/s reach. A discussion on dynamic maintenance to enhance G.vector's practical application then concludes this article.

Method and apparatus for vectored data communication

Abstract: In an embodiment, vector training signals are received. Noise affecting the training signals is evaluated, and a noise indication is thus determined.