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» Some combinatorial constructions for optical orthogonal code...
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COMBINATORICS
2006
98views more  COMBINATORICS 2006»
13 years 6 months ago
A Few More Cyclic Steiner 2-Designs
In this paper, we prove the existence of a cyclic (v, 4, 1)-BIBD for v = 12t + 4, 3 t 50 using computer programs, which are useful in recursive constructions for cyclic designs....
Kejun Chen, Ruizhong Wei
ICC
2007
IEEE
104views Communications» more  ICC 2007»
14 years 22 days ago
Time-and-Frequency-Hopping Optical Orthogonal Codes with Hierarchical Cross-Correlation Constraints for Service Differentiation
— In this paper, we consider time-and-frequency hopping (TFH) codes for optical code-division multiple-access (OCDMA) networks. To support the differentiated service requirements...
Chung-Keun Lee, Seung-Woo Seo
CORR
2008
Springer
97views Education» more  CORR 2008»
13 years 6 months ago
Power-Balanced Orthogonal Space-Time Block Code
In this paper, we propose two new systematic ways to construct amicable orthogonal designs (AOD), with an aim to facilitate the construction of power-balanced orthogonal spacetime ...
Chau Yuen, Yong Liang Guan, Tjeng Thiang Tjhung
CORR
2010
Springer
101views Education» more  CORR 2010»
13 years 6 months ago
Construction and Applications of CRT Sequences
Protocol sequences are used for channel access in the collision channel without feedback. Each user accesses the channel according to a deterministic zero-one pattern, called the p...
Kenneth W. Shum, Wing Shing Wong
CORR
2008
Springer
57views Education» more  CORR 2008»
13 years 6 months ago
Square Complex Orthogonal Designs with Low PAPR and Signaling Complexity
Abstract--Space-Time Block Codes from square complex orthogonal designs (SCOD) have been extensively studied and most of the existing SCODs contain large number of zero. The zeros ...
Smarajit Das, B. Sundar Rajan