Performance characteristics of the IS-95 standard for CDMA spread spectrum mobile communication systems

Raveendran, V.R.; Doherty, J.F.

doi:10.1109/mwscas.1996.587866

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…Moreover, the code rate is defined as k/n. For instance, the (2,1,8) CC is used in the forward link of the IS-95 standard [1]. Convolutional encoders are represented in circuit diagram, state diagram (SD), augmented SD, or trellis diagram [2], [3].…”

Section: Introductionmentioning

confidence: 99%

“…The consultative committee for space data systems (CCSDSs) uses CCs as main sublayer of the data link layer. The basic CC of CCSDS is (1,2,7), which shall be the nonsystematic code [4], [5].…”

Section: Introductionmentioning

confidence: 99%

“…However, this has no analytical form and there is no lowtime complex algorithm to determine the loops in the SD. These problems make this rule impractical for TF evaluation of CCs with large values of v, [e.g., (2,1,8) CC in the IS-95].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Novel Method to Derive Transfer Function and Tight BER Bound of Convolutional Codes

Bigdeli

Abolhassani

2015

Can. J. Electr. Comput. Eng.

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In this paper, a novel method is proposed to first derive an exact closed-form transfer function (TF) for any convolutional code, and then using this exact TF, a tight upper bound for bit error rate (BER) is derived for the code. This method applies submatrices of the code adjacent matrix, and its complexity is in the order of L 3 (L is the number of states in the state diagram of the code). The derived BER bound is especially important for applications with low signal-to-noise power ratio values, such as in the cases with high interference power, in satellite communications, and in multihop wireless networks. Résumé-Dans cet article, une nouvelle méthode est proposée pour obtenir une fonction de transfert fermée (FT) exacte pour tout code de convolution. Ensuite, en utilisant cette FT exacte, une limite supérieure du taux d'erreur binaire (TEB) limité est dérivée du code. Cette méthode applique la matrice adjacente du code en sous-matrice, et sa complexité est d'ordre L 3 (L étant le nombre d'états dans le diagramme d'état du code). Le lien du TEB dérivé est particulièrement important pour les applications avec des valeurs de signal sur bruit faibles, comme dans les cas à forte interférence, dans les communications par satellite et dans les réseaux sans-fil à sauts multiples. Index Terms-Convolutional code (CC), nondeterministic finite automaton (NFA), transfer function (TF).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Novel Method to Derive Transfer Function and Tight BER Bound of Convolutional Codes

Bigdeli

Abolhassani

2015

Can. J. Electr. Comput. Eng.

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A New Loopback GSM/DCS Bit Error Rate Test Method On Baseband I/Q Outputs

Nowakowski

Bonhoure

Carbonero

2001

57th ARFTG Conference Digest

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An improved pseudo random sequence based on the m-sequence

Zheng

Wang

et al. 2011

Proceedings of 2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference

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m-sequence is the earliest pseudo random sequence that was used widely, it has good randomness and balance. But it has a disadvantage in the amount of address code. This paper puts forward a method which use at last two m-sequence to output in the order. The new sequence has good correlation function and it has a big promotion in the amount of address and the variety of the period that make it has extensive applications in CDMA and communication encryption.

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Performance characteristics of the IS-95 standard for CDMA spread spectrum mobile communication systems

Cited by 3 publications

References 19 publications

A Novel Method to Derive Transfer Function and Tight BER Bound of Convolutional Codes

A Novel Method to Derive Transfer Function and Tight BER Bound of Convolutional Codes

A New Loopback GSM/DCS Bit Error Rate Test Method On Baseband I/Q Outputs

An improved pseudo random sequence based on the m-sequence

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