Performance comparison of single-user pre-equalization techniques for uplink MC-CDMA systems

2004 ◽  
Author(s):  
P. Bisaglia ◽  
N. Benvenuto ◽  
S. Quitadamo
Keyword(s):  
Performance Comparison ◽  
Single User ◽  
Cdma Systems

scholarly journals An Improved Fuzzy Vector Signature with Reusability

2020 ◽  
Vol 10 (20) ◽  
pp. 7141
Author(s):  
Ilhwan Lim ◽  
Minhye Seo ◽  
Dong Hoon Lee ◽  
Jong Hwan Park
Keyword(s):  
Sampling Method ◽  
Performance Comparison ◽  
Error Rates ◽  
Efficiency Improvement ◽  
Fuzzy Extractor ◽  
Authentication Protocols ◽  
Biometric Data ◽  
Single User ◽  
Helper Data ◽  
Fuzzy Vector

Fuzzy vector signature (FVS) is a new primitive where a fuzzy (biometric) data w is used to generate a verification key (VKw), and, later, a distinct fuzzy (biometric) data w′ (as well as a message) is used to generate a signature (σw′). The primary feature of FVS is that the signature (σw′) can be verified under the verification key (VKw) only if w is close to w′ in a certain predefined distance. Recently, Seo et al. proposed an FVS scheme that was constructed (loosely) using a subset-based sampling method to reduce the size of helper data. However, their construction fails to provide the reusability property that requires that no adversary gains the information on fuzzy (biometric) data even if multiple verification keys and relevant signatures of a single user, which are all generated with correlated fuzzy (biometric) data, are exposed to the adversary. In this paper, we propose an improved FVS scheme which is proven to be reusable with respect to arbitrary correlated fuzzy (biometric) inputs. Our efficiency improvement is achieved by strictly applying the subset-based sampling method used before to build a fuzzy extractor by Canetti et al. and by slightly modifying the structure of the verification key. Our FVS scheme can still tolerate sub-linear error rates of input sources and also reduce the signing cost of a user by about half of the original FVS scheme. Finally, we present authentication protocols based on fuzzy extractor and FVS scheme and give performance comparison between them in terms of computation and transmission costs.

Performance comparison of coherent ultrashort light pulse and incoherent broad-band CDMA systems

1999 ◽  
Vol 11 (12) ◽  
pp. 1683-1685 ◽  
Author(s):  
R. Papannareddy ◽  
A.M. Weiner
Keyword(s):  
Light Pulse ◽  
Broad Band ◽  
Performance Comparison ◽  
Ultrashort Light Pulse ◽  
Cdma Systems

Performance comparison between S-ALOHA and R3T protocols for multirate OFFH-CDMA systems in optical packet networks

2006 ◽  
Vol 5 (12) ◽  
pp. 927 ◽  
Author(s):  
Elie Inaty ◽  
Robert Raad ◽  
Paul Fortier ◽  
Hossam M. Shalaby
Keyword(s):  
Performance Comparison ◽  
Packet Networks ◽  
Cdma Systems

BER performance comparison of optical CDMA systems with/without turbo codes

2002 ◽  
Author(s):  
Muralidhar Kulkarni ◽  
Vijender S. Chauhan ◽  
Yashpal Dutta ◽  
Ravindra K. Sinha
Keyword(s):  
Turbo Codes ◽  
Performance Comparison ◽  
Optical Cdma ◽  
Cdma Systems ◽  
Ber Performance

scholarly journals Performance Comparison of Space-Time Block Coding for Single and Multicarrier CDMA Systems

2007 ◽  
Author(s):  
César Medina ◽  
Tiago Vinhoza ◽  
Raimundo Sampaio Neto
Keyword(s):  
Space Time ◽  
Performance Comparison ◽  
Multicarrier Cdma ◽  
Time Block ◽  
Block Coding ◽  
Space Time Block Coding ◽  
Cdma Systems
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