• Corpus ID: 18911794

TECHNIQUES FOR REDUCTION OF MULTIPLE ACCESS INTERFERENCE IN FIBER-OPTIC CDMA SYSTEMS

@inproceedings{Singh2011TECHNIQUESFR,
  title={TECHNIQUES FOR REDUCTION OF MULTIPLE ACCESS INTERFERENCE IN FIBER-OPTIC CDMA SYSTEMS},
  author={Jaswinder Singh},
  year={2011}
}
Fiber-optic CDMA is an emerging technology with far more advantages than the conventional TDMA and FDMA techniques. The only limitation of FO-CDMA is the multiple access interference among the users simultaneously accessing the network. This paper reviews the techniques proposed in the literature for the reduction of multiple access interference (MAI) between the users simultaneously accessing the network in fiber-optic CDMA systems. Two important techniques: Successive Interference… 

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References

SHOWING 1-10 OF 18 REFERENCES
All-optical differential detection for suppressing multiple-access interference in coherent time-addressed optical CDMA systems.
A novel scheme for suppressing the multiple-access interference (MAI) in coherent time-addressed optical CDMA systems is proposed. This is based on a differential detection using the dual-control
Reductions of multiple-access interference in fiber-grating-based optical CDMA network
TLDR
A fiber Bragg grating encoder/decoder scheme based on correlation subtractions of nearly orthogonal M-sequence codes can partly compensate the MAI effects induced by nonflattened sources and further reduce the average error probability in the system performance.
CDMA fiber-optic systems with optical hard limiters
TLDR
The bit error probability for the CDMA fiber-optic systems with optical hard limiters and the improvement in the performance from using a hard limiter with prime code and extended prime code is shown.
Two-dimensional optical CDMA differential system with prime/OOC codes
A new fast optical time-spreading/frequency hopping differential code division multiple access system with prime/optical orthogonal codes is proposed. The performance of a multiple Bragg grating
A new family of 2-D wavelength/time spreading code for optical-code division multiple-access system with balanced detection
TLDR
The proposed scheme has the enhanced performance and allows for a large number of simultaneous users compared with the 3-D and other balanced codes for differential detection.
Fiber-grating-based optical CDMA spectral coding with nearly orthogonal M-sequence codes
An optical spectral coding scheme is proposed for fiber-optic code-division multiple access (FO-CDMA) communications. The spectral coding is based on the pseudo-orthogonality of FO-CDMA codes
High-performance optical CDMA system based on 2-D optical orthogonal codes
TLDR
This research shows that OCDMA implementation complexity can be avoided by using a guard time in the codes and an optical hard limiter in the receiver, and that 2-D wavelength/time codes have better SE than one-dimensional CDMA/WDM combinations.
Channel interference reduction using random Manchester codes for both synchronous and asynchronous fiber-optic CDMA systems
TLDR
The results show that the proposed systems can support a larger number of simultaneous users than other systems with similar system complexity under the same bit-error probability constraint.
Trellis-coded asynchronous optical CDMA systems
Since optical code division multiple access (CDMA) is an interference-limited system, we propose a system employing trellis-coded scheme and double optical hardlimiters (TC-DHLs) to alleviate the
Performance analysis of successive interference cancellation with modified quadratic congruence and Hadamard codes for optical CDMA
TLDR
It has been shown that the proposed scheme performs better than the conventional scheme, and it has been found that signature code sets with higher weight are preferred in the SIC scheme.
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