The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
O Acesso Múltiplo por Divisão de Código Óptico (OCD-MA) tem emergido como um esquema atraente em sistemas de comunicação de fibra óptica, bem como em sistemas de comunicação espacial nos últimos anos. Nos sistemas OCDMA, M-ary Pulse Position Modulation (PPM), tem sido considerado um formato de sinalização eficiente que tem a capacidade de reduzir a interferência no canal causada por outros usuários e também de aumentar o número de usuários simultâneos. Aplicamos codificação de controle de erros para melhorar o desempenho do sistema OCDMA modulado por posição de pulso (PPM/OCDMA) e este artigo investiga o desempenho de M- Sistemas PPM/OCDMA com Mcodificação convolucional -ária. O código Dual-k é usado como Mcódigo convolucional -ário e códigos ortogonais ópticos com o valor máximo de correlação cruzada de 1 e 2 são empregados como sequências de assinatura. Derivamos uma expressão para a probabilidade de erro de bit do novo sistema e mostramos que combinando Mcodificação convolucional -ária e M-ary PPM resulta em um melhor desempenho de erros. Também é mostrado que o número de usuários simultâneos pode ser significativamente aumentado com o sistema proposto em comparação com o sistema PPM/OCDMA não codificado com a mesma probabilidade de erro de bit e com a mesma taxa de bits de informação. Também analisamos o sistema com codificação convolucional binária e é feita uma comparação com o sistema proposto.
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Copiar
Hemali PASQUAL, Hiroyuki YASHIMA, "Analysis of Optical PPM/CDMA System with M-Ary Convolutional Coding" in IEICE TRANSACTIONS on Communications,
vol. E82-B, no. 10, pp. 1618-1625, October 1999, doi: .
Abstract: Optical Code Division Multiple Access (OCD- MA) has been emerging as an attractive scheme in fiber optic communication systems as well as in space communication systems in past few years. In OCDMA systems, M-ary Pulse Position Modulation (PPM), has been regarded as an efficient signalling format which has the capability to reduce the channel interference caused by the other users and also to increase the number of simultaneous users. We apply error control coding to improve the system performance of pulse position modulated OCDMA (PPM/OCDMA) systems and this paper investigates the performance of M-ary PPM/OCDMA systems with M-ary convolutional coding. Dual-k code is used as the M-ary convolutional code and Optical Orthogonal Codes with the maximum cross correlation value of 1 and 2 are employed as the signature sequences. We derive an expression for the bit error probability of the new system and show that combining M-ary convolutional coding and M-ary PPM results in an improved error performance. Also it is shown that the number of simultaneous users can be significantly increased with the proposed system compared to the uncoded PPM/OCDMA system with the same bit error probability and with the same information bit rate. We also analyze the system with binary convolutional coding and a comparison with the proposed system is given.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e82-b_10_1618/_p
Copiar
@ARTICLE{e82-b_10_1618,
author={Hemali PASQUAL, Hiroyuki YASHIMA, },
journal={IEICE TRANSACTIONS on Communications},
title={Analysis of Optical PPM/CDMA System with M-Ary Convolutional Coding},
year={1999},
volume={E82-B},
number={10},
pages={1618-1625},
abstract={Optical Code Division Multiple Access (OCD- MA) has been emerging as an attractive scheme in fiber optic communication systems as well as in space communication systems in past few years. In OCDMA systems, M-ary Pulse Position Modulation (PPM), has been regarded as an efficient signalling format which has the capability to reduce the channel interference caused by the other users and also to increase the number of simultaneous users. We apply error control coding to improve the system performance of pulse position modulated OCDMA (PPM/OCDMA) systems and this paper investigates the performance of M-ary PPM/OCDMA systems with M-ary convolutional coding. Dual-k code is used as the M-ary convolutional code and Optical Orthogonal Codes with the maximum cross correlation value of 1 and 2 are employed as the signature sequences. We derive an expression for the bit error probability of the new system and show that combining M-ary convolutional coding and M-ary PPM results in an improved error performance. Also it is shown that the number of simultaneous users can be significantly increased with the proposed system compared to the uncoded PPM/OCDMA system with the same bit error probability and with the same information bit rate. We also analyze the system with binary convolutional coding and a comparison with the proposed system is given.},
keywords={},
doi={},
ISSN={},
month={October},}
Copiar
TY - JOUR
TI - Analysis of Optical PPM/CDMA System with M-Ary Convolutional Coding
T2 - IEICE TRANSACTIONS on Communications
SP - 1618
EP - 1625
AU - Hemali PASQUAL
AU - Hiroyuki YASHIMA
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E82-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 1999
AB - Optical Code Division Multiple Access (OCD- MA) has been emerging as an attractive scheme in fiber optic communication systems as well as in space communication systems in past few years. In OCDMA systems, M-ary Pulse Position Modulation (PPM), has been regarded as an efficient signalling format which has the capability to reduce the channel interference caused by the other users and also to increase the number of simultaneous users. We apply error control coding to improve the system performance of pulse position modulated OCDMA (PPM/OCDMA) systems and this paper investigates the performance of M-ary PPM/OCDMA systems with M-ary convolutional coding. Dual-k code is used as the M-ary convolutional code and Optical Orthogonal Codes with the maximum cross correlation value of 1 and 2 are employed as the signature sequences. We derive an expression for the bit error probability of the new system and show that combining M-ary convolutional coding and M-ary PPM results in an improved error performance. Also it is shown that the number of simultaneous users can be significantly increased with the proposed system compared to the uncoded PPM/OCDMA system with the same bit error probability and with the same information bit rate. We also analyze the system with binary convolutional coding and a comparison with the proposed system is given.
ER -