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
Neste artigo, é proposto um novo conjunto de códigos de grande espalhamento com uma correlação cruzada baixa e uniforme. O conjunto de códigos proposto é capaz de (1) aumentar o número de usuários atribuídos (capacidade) em um sistema de acesso múltiplo por divisão de código multiportadora (MC-CDMA) e (2) reduzir a relação de potência de pico para média (PAPR) de um sistema de multiplexação por divisão ortogonal de frequência (OFDM). Neste artigo, derivamos um novo conjunto de códigos e apresentamos um exemplo para demonstrar melhorias de desempenho de sistemas OFDM e MC-CDMA. Nosso conjunto de códigos proposto com comprimento de código de N tem K=2N+1 número de códigos para suportar até (2N+1) usuários e exibe propriedades de correlação cruzada mais baixas em comparação com os conjuntos de códigos de difusão existentes. Nossos resultados com subportadora N=16 confirma que o conjunto de códigos proposto supera o atual conjunto de códigos de interferometria de portadora pseudo-ortogonal (POCI) com ganho de 5 dB no nível de taxa de erro de bit (BER) de 10-4 no canal de ruído gaussiano branco aditivo (AWGN) e ganho de mais de 3.6 dB em um canal de desvanecimento multipercurso.
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
Khoirul ANWAR, Masato SAITO, Takao HARA, Minoru OKADA, "Large Code Set for Double User Capacity and Low PAPR Level in Multicarrier Systems" in IEICE TRANSACTIONS on Fundamentals,
vol. E91-A, no. 8, pp. 2183-2194, August 2008, doi: 10.1093/ietfec/e91-a.8.2183.
Abstract: In this paper, a new large spreading code set with a uniform low cross-correlation is proposed. The proposed code set is capable of (1) increasing the number of assigned user (capacity) in a multicarrier code division multiple access (MC-CDMA) system and (2) reducing the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) system. In this paper, we derive a new code set and present an example to demonstrate performance improvements of OFDM and MC-CDMA systems. Our proposed code set with code length of N has K=2N+1 number of codes for supporting up to (2N+1) users and exhibits lower cross correlation properties compared to the existing spreading code sets. Our results with subcarrier N=16 confirm that the proposed code set outperforms the current pseudo-orthogonal carrier interferometry (POCI) code set with gain of 5 dB at bit-error-rate (BER) level of 10-4 in the additive white Gaussian noise (AWGN) channel and gain of more than 3.6 dB in a multipath fading channel.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e91-a.8.2183/_p
Copiar
@ARTICLE{e91-a_8_2183,
author={Khoirul ANWAR, Masato SAITO, Takao HARA, Minoru OKADA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Large Code Set for Double User Capacity and Low PAPR Level in Multicarrier Systems},
year={2008},
volume={E91-A},
number={8},
pages={2183-2194},
abstract={In this paper, a new large spreading code set with a uniform low cross-correlation is proposed. The proposed code set is capable of (1) increasing the number of assigned user (capacity) in a multicarrier code division multiple access (MC-CDMA) system and (2) reducing the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) system. In this paper, we derive a new code set and present an example to demonstrate performance improvements of OFDM and MC-CDMA systems. Our proposed code set with code length of N has K=2N+1 number of codes for supporting up to (2N+1) users and exhibits lower cross correlation properties compared to the existing spreading code sets. Our results with subcarrier N=16 confirm that the proposed code set outperforms the current pseudo-orthogonal carrier interferometry (POCI) code set with gain of 5 dB at bit-error-rate (BER) level of 10-4 in the additive white Gaussian noise (AWGN) channel and gain of more than 3.6 dB in a multipath fading channel.},
keywords={},
doi={10.1093/ietfec/e91-a.8.2183},
ISSN={1745-1337},
month={August},}
Copiar
TY - JOUR
TI - Large Code Set for Double User Capacity and Low PAPR Level in Multicarrier Systems
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2183
EP - 2194
AU - Khoirul ANWAR
AU - Masato SAITO
AU - Takao HARA
AU - Minoru OKADA
PY - 2008
DO - 10.1093/ietfec/e91-a.8.2183
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E91-A
IS - 8
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - August 2008
AB - In this paper, a new large spreading code set with a uniform low cross-correlation is proposed. The proposed code set is capable of (1) increasing the number of assigned user (capacity) in a multicarrier code division multiple access (MC-CDMA) system and (2) reducing the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) system. In this paper, we derive a new code set and present an example to demonstrate performance improvements of OFDM and MC-CDMA systems. Our proposed code set with code length of N has K=2N+1 number of codes for supporting up to (2N+1) users and exhibits lower cross correlation properties compared to the existing spreading code sets. Our results with subcarrier N=16 confirm that the proposed code set outperforms the current pseudo-orthogonal carrier interferometry (POCI) code set with gain of 5 dB at bit-error-rate (BER) level of 10-4 in the additive white Gaussian noise (AWGN) channel and gain of more than 3.6 dB in a multipath fading channel.
ER -