Variable-length code construction for incoherent optical CDMA systems

Lin, Jen-Yung; Jhou, Jhih-Syue; Wen, Jyh‐Horng

doi:10.1016/j.yofte.2006.12.007

Cited by 9 publications

(13 citation statements)

References 20 publications

(48 reference statements)

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“…Note that when q q, then 2 ≤ j ≤ K q . Since I 1 j ; I 2 j ; I q j ; …; I Q j are independent from each other, the probability density function of the total interference I using binomial distribution can be modified from [11] as…”

Section: Binomial Distribution Of the Mai Analysismentioning

confidence: 99%

“…This modified equation can accommodate an arbitrary number of classes (indicated by Q) instead of only two classes as in [11]. As observed from Eq.…”

Section: Binomial Distribution Of the Mai Analysismentioning

confidence: 99%

“…(13) in [11] because in [11] the two classes share the same code-weight, which equals the decision threshold (denoted by Th). In our case, however, the two classes have different code-weights and hence different thresholds (indicated by W 1 and W 2 , respectively).…”

Section: Binomial Distribution Of the Mai Analysismentioning

confidence: 99%

“…However, the growing importance of aggregating various services with different data rates, such as multimedia transmission (e.g., voice, high-definition television, and e-learning) has resulted in diversified data traffic and the requirement of multirate and differentiated-QoS transmission [1]. Consequently, multilength OOCs [10,11] and variable-weight OOCs [12,13] have been introduced to support multirate services and QoS differentiation in 1D-coded OCDMA systems, respectively. Furthermore, a 1D multiweight multilength (MWML) OCDMA system with the ability to simultaneously support multirate and differentiated QoS transmissions has been proposed [14].…”

Section: Introductionmentioning

confidence: 99%

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Extended 2D Codes Supporting Multirate and QoS in Optical CDMA Networks With Poisson and Binomial MAI Models

Zou

Karbassian²,

Ghafouri‐Shiraz

2013

J. Opt. Commun. Netw.

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In this paper, an extended 2D multiweight multilength optical orthogonal code (MWML-OOC) is proposed and analyzed using both Poisson and binomial distributions of multiple access interference (MAI). We also analyze the performance of 1D and 2D MWML-OOC that can support multirate transmission and quality-of-services (QoS) differentiation in the optical code-division multipleaccess networks. The theory of the 1D MWML-OOC is reviewed where its bit-error rate (BER) performance analysis, based on the binomial model of MAI using the convolution technique, is presented and compared with the well-known Poisson model. The results indicated that the overall performance referred to as BER considering the binomial distribution of MAI is better than that obtained from Poisson-modeled MAI for both 1D and 2D MWML-OOCs. It was also found that the extended 2D MWML-OOC can support a greater number of users with reduced chip times and highly improve the BER performance compared with its 1D and 2D counterparts.

show abstract

Section: Binomial Distribution Of the Mai Analysismentioning

confidence: 99%

“…This modified equation can accommodate an arbitrary number of classes (indicated by Q) instead of only two classes as in [11]. As observed from Eq.…”

Section: Binomial Distribution Of the Mai Analysismentioning

confidence: 99%

Section: Binomial Distribution Of the Mai Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Extended 2D Codes Supporting Multirate and QoS in Optical CDMA Networks With Poisson and Binomial MAI Models

Zou

Karbassian²,

Ghafouri‐Shiraz

2013

J. Opt. Commun. Netw.

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show abstract

“…In order to support multi-rate, multi-QoS, and jointly multirate and multi-QoS transmission on incoherent OCDMA networks, Multi-Length Optical Orthogonal Code (OOC), Multi-Weight OOC, and Multi-Length-Variable-Weight OOC (MLVW-OCC) have been designed, respectively [6][7][8][9][10][11]. We denote these variants of OOC as Generalized OOC (GOOC).…”

Section: Architecture Of the Proposed Schemementioning

confidence: 99%

Multi-service path switching in all-optical GMPLS core network

Beyranvand

Salehi

2008

2008 International Symposium on Telecommunications

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In this paper, we present a novel labeling scheme for Multi-service path switching in the all-optical Generalized MultiProtocol Label Switched (GMPLS) core networks. In this scheme, we employ the Multi-Length Variable-Weight Optical Orthogonal Code (MLVW-OOC) as a multiplexing signature sequence and identifying label. In order to analyze the performance of the network, the probability of error is evaluated for arbitrary number of classes and cross-correlation values. Furthermore, the probability of performance degradation is investigated by considering the activity coefficient of connected paths. To assure the demanded performance, Label Distributed Protocol (LDP) is accommodated by a controlling mechanism which limits the number of connected paths. Finally, a four-class network is designed by the proposed labeling scheme and the probabilities of error and the performance degradation are investigated; results indicate that decreasing the upper bound of the connected paths will reduce the probability of the performance degradation.

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Services Differentiation and Quality of Services in Optical CDMA Networks

Ghafouri‐Shiraz

Karbassian

2012

Optical CDMA Networks

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Variable-length code construction for incoherent optical CDMA systems

Cited by 9 publications

References 20 publications

Extended 2D Codes Supporting Multirate and QoS in Optical CDMA Networks With Poisson and Binomial MAI Models

Extended 2D Codes Supporting Multirate and QoS in Optical CDMA Networks With Poisson and Binomial MAI Models

Multi-service path switching in all-optical GMPLS core network

Services Differentiation and Quality of Services in Optical CDMA Networks

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