Coded CP-SC communication scheme for outdoor power line communications

La-Gatta, Filipe A.; Ribeiro, Moisés V.; Legg, Andrei P.; Machado, Renato

doi:10.1109/isplc.2010.5479907

Cited by 7 publications

(4 citation statements)

References 12 publications

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“…Para ello, el sistema fue ensayado mediante la simulación de una serie de transmisiones de 10 6 bits de información utilizando 20 canales distintos y distintas relaciones señales a ruido. A modo ilustrativo, los resultados fueron contrastados con los obtenidos por La-Gatta et al [14], los cuales a su vez fueron obtenidos por el autor utilizando un modelo de canal estático y técnicas de modulación y ecualización en frecuencia. En la Fig.…”

Section: Resultsunclassified

“…Figura 6: Variación en el tiempo de los primeros términos distintos de cero de la respuesta estimada de un canal aleatorio Figura 7: Variación en el tiempo de los primeros términos distintos de cero de la respuesta estimada de un canal aleatorio Figura 8: Comparación de tasas de error binaria entre distintos métodos de ecualización. CP-SC-ZF y CP-SC-MMSE [14]. BPSK-RLS, método propuesto.…”

Section: Resultsunclassified

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Dynamic Characterization and Equalization of a Power Line Communication Channel

Hadad

Funes

Donato

et al. 2013

IEEE Latin Am. Trans.

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Power Line Communication (PLC) systems need signal processing algorithms in order to recover the transmitted signals from the high degrading medium. In the literature exist some techniques that work on the basis of a constant, known channel, but it was demonstrated that the PLC channel is time variant, therefore these techniques lose efficiency. This work presents a dynamic equalization algorithm computed in the time domain, where the channel characterization is done by a recursive least squares algorithm using the transmitted data as reference. The proposal was tested with simulations and was statistically validated using in time variant PLC channel models, obtaining a lower error rate than other methods.

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Section: Resultsunclassified

Dynamic Characterization and Equalization of a Power Line Communication Channel

Hadad

Funes

Donato

et al. 2013

IEEE Latin Am. Trans.

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“…A demanda crescente por aplicac ¸ões de telecomunicac ¸ões com taxas e confiabilidade cada vez mais elevadas, tem levado a grande desenvolvimento e pesquisa na área de códigos corretores de erros. Destes, podemos citar alguns principais, de largo uso, como Códigos Turbo [1], Códigos Fontanais [2], Códigos Raptor [3], e Códigos LDPC (Low Density Parity Check) [4], [5], [6], [7], objeto deste trabalho.…”

Section: Introduc ¸ãOunclassified

Estrategias de encurtamento em codigos LDPC

La-Gatta¹,

Finamore²,

Ribeiro³

2013

Anais De XXXI Simpósio Brasileiro De Telecomunicações

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Resumo-Quatro estratégias de encurtamento de códigos LDPC foram investigadas neste trabalho. Uma estratégia é caracterizada basicamente pela selec ¸ão das posic ¸ões, na palavra-deinformac ¸ão, em que os bits conhecidos serão inseridos. Resultados de simulac ¸ões mostram que além de se optar por fazer o encurtamento de um código, a estratégia a ser utilizada, é importante. Das estratégias estudadas, chegou-se à conclusão de que aquela que realiza o encurtamento nos inserido bits conhecidos nas posic ¸ões iniciais da palavra-de-informac ¸ão conduz a um código encurtado com melhor desempenho (quando comparada com as demais). É intuitivo que a inserc ¸ão de bits conhecidos em posic ¸ões da palavra-de-informac ¸ão que pertenc ¸am aos ciclos de menor comprimento resulte em uma estratégia que conduza a códigos de melhor desempenho -ainda que razoável, os resultados obtidos com uma estratégia de encurtamento dependente de ciclos, investigada neste trabalho, não corroboraram tal conjetura intuitiva.

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“…power allocation) with an eye also to the error rate. Single carrier approach is not new in the context of such a frequency selective medium [8] and some of the typical problems of this approach deal with InterSymbol Interference (ISI), multi-user interference (if a perfect orthogonal access misses to be implemented); on account of these impairments, the work in [9] introduced a cyclic prefix based scheme for single carrier systems and proposed an equalizer in the frequency domain. Furthermore, in the framework of PLC InHome networking the role played by cognitive paradigm has been explicitly accounted in [10] and [11].…”

Section: Introductionmentioning

confidence: 99%

Cognitive spectrum shaping for InHome Power Line Communications

Biagi

Rinauro

Cusani

2012

2012 IEEE International Symposium on Power Line Communications and Its Applications

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Power Line Communications (PLC) are one of the most recent technologies proposed to allow the InHome Internet access, in competition with different Wireless Standards as Wi-Fi. The advantages offered by PLC deal with network availability since each modem connected to the plug is able, in principle, to access the Internet while in the Wi-Fi scenario, the propagation environment strongly influences the received signal strength and consequently connection performance. The conventional approach followed in planning the physical layer of PLC systems, like for example in HomePlug solution, is based on Orthogonal Frequency Division Multiplexing (OFDM), able to combat the frequency selective nature of the channel frequency response. However, OFDM presents some drawbacks as, for example, Peak to Average Power Ratio (PAPR) and Inter Carrier Interference (ICI) while a different approach based on constrained signal shaping (single carrier) can solve these problems. In this direction, this work shows a frequency shaping approach where the frequency occupancy is minimized through constraints on spectral emission and link quality level. © 2012 IEEE

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Coded CP-SC communication scheme for outdoor power line communications

Cited by 7 publications

References 12 publications

Dynamic Characterization and Equalization of a Power Line Communication Channel

Dynamic Characterization and Equalization of a Power Line Communication Channel

Estrategias de encurtamento em codigos LDPC

Cognitive spectrum shaping for InHome Power Line Communications

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