BER Analysis for Multi-Carrier DS CDMA with Multi-Rate Traffic

Abbas SANDOUK; Masaaki HARADA; Hiraku OKADA; Takaya YAMAZATO; Masaaki KATAYAMA; Akira OGAWA

BER Analysis for Multi-Carrier DS CDMA with Multi-Rate Traffic

Abbas SANDOUK, Masaaki HARADA, Hiraku OKADA, Takaya YAMAZATO, Masaaki KATAYAMA, Akira OGAWA

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In this letter, we present bit error analysis (BER) of orthogonal multi-carrier direct sequence code division multiple access (DS-CDMA) system with multi-rate (multimedia) traffic. Analysis is carried out with random signature codes for an AWGN channel. Interference in such a system is severe because all users of all media transmit over the same assigned sub-carriers. This makes the analysis difficult. In our analysis, we divide this interference into different types and carry out our analysis to obtain the BER taking into account all these types. We show that the performance of the system is improved as the number of assigned sub-carriers M increases until a limit where the improvement does not continue even when M increases more. This is because of, as we show, the interference due to other sub-carriers becomes constant even in the case of M , and the interference in a multi-rate multi-carrier system is bigger than that in a single-carrier (M=1) by a factor of π²/3.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E84-A No.7 pp.1723-1731

Publication Date: 2001/07/01

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Type of Manuscript: Special Section LETTER (Special Section on Multi-dimensional Mobile Information Networks)

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Abbas SANDOUK, Masaaki HARADA, Hiraku OKADA, Takaya YAMAZATO, Masaaki KATAYAMA, Akira OGAWA, "BER Analysis for Multi-Carrier DS CDMA with Multi-Rate Traffic" in IEICE TRANSACTIONS on Fundamentals, vol. E84-A, no. 7, pp. 1723-1731, July 2001, doi: .
Abstract: In this letter, we present bit error analysis (BER) of orthogonal multi-carrier direct sequence code division multiple access (DS-CDMA) system with multi-rate (multimedia) traffic. Analysis is carried out with random signature codes for an AWGN channel. Interference in such a system is severe because all users of all media transmit over the same assigned sub-carriers. This makes the analysis difficult. In our analysis, we divide this interference into different types and carry out our analysis to obtain the BER taking into account all these types. We show that the performance of the system is improved as the number of assigned sub-carriers M increases until a limit where the improvement does not continue even when M increases more. This is because of, as we show, the interference due to other sub-carriers becomes constant even in the case of M , and the interference in a multi-rate multi-carrier system is bigger than that in a single-carrier (M=1) by a factor of π²/3.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e84-a_7_1723/_p

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@ARTICLE{e84-a_7_1723,
author={Abbas SANDOUK, Masaaki HARADA, Hiraku OKADA, Takaya YAMAZATO, Masaaki KATAYAMA, Akira OGAWA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={BER Analysis for Multi-Carrier DS CDMA with Multi-Rate Traffic},
year={2001},
volume={E84-A},
number={7},
pages={1723-1731},
abstract={In this letter, we present bit error analysis (BER) of orthogonal multi-carrier direct sequence code division multiple access (DS-CDMA) system with multi-rate (multimedia) traffic. Analysis is carried out with random signature codes for an AWGN channel. Interference in such a system is severe because all users of all media transmit over the same assigned sub-carriers. This makes the analysis difficult. In our analysis, we divide this interference into different types and carry out our analysis to obtain the BER taking into account all these types. We show that the performance of the system is improved as the number of assigned sub-carriers M increases until a limit where the improvement does not continue even when M increases more. This is because of, as we show, the interference due to other sub-carriers becomes constant even in the case of M , and the interference in a multi-rate multi-carrier system is bigger than that in a single-carrier (M=1) by a factor of π²/3.},
keywords={},
doi={},
ISSN={},
month={July},}

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TY - JOUR
TI - BER Analysis for Multi-Carrier DS CDMA with Multi-Rate Traffic
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1723
EP - 1731
AU - Abbas SANDOUK
AU - Masaaki HARADA
AU - Hiraku OKADA
AU - Takaya YAMAZATO
AU - Masaaki KATAYAMA
AU - Akira OGAWA
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E84-A
IS - 7
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - July 2001
AB - In this letter, we present bit error analysis (BER) of orthogonal multi-carrier direct sequence code division multiple access (DS-CDMA) system with multi-rate (multimedia) traffic. Analysis is carried out with random signature codes for an AWGN channel. Interference in such a system is severe because all users of all media transmit over the same assigned sub-carriers. This makes the analysis difficult. In our analysis, we divide this interference into different types and carry out our analysis to obtain the BER taking into account all these types. We show that the performance of the system is improved as the number of assigned sub-carriers M increases until a limit where the improvement does not continue even when M increases more. This is because of, as we show, the interference due to other sub-carriers becomes constant even in the case of M , and the interference in a multi-rate multi-carrier system is bigger than that in a single-carrier (M=1) by a factor of π²/3.
ER -