Generalized Cyclic Delay Diversity for Orthogonal Frequency Division Multiplexing

2007 ◽  
Author(s):  
Harry Z. B. Chen ◽  
Robert Schober ◽  
Lutz Lampe
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Cyclic Delay Diversity ◽  
Delay Diversity

Multiple-Input-Single-Output Based a Novel Pilot-Aided Channel Estimation for Cyclic Delay Diversity Orthogonal Frequency Division Multiplexing Frameworks

2019 ◽  
Vol 16 (2) ◽  
pp. 697-701
Author(s):  
D. Jagadeesan ◽  
K. Palani ◽  
G. Asha
Keyword(s):  
Channel Estimation ◽  
Orthogonal Frequency Division Multiplexing ◽  
Low Complexity ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Cyclic Delay Diversity ◽  
Single Output ◽  
Estimation Scheme ◽  
Significant Performance ◽  
Delay Diversity

A low-complexity standard transmit diversity scheme for coded orthogonal frequency division multiplexing (OFDM) frameworks is cyclic delay diversity (CDD). As the cyclic delay esteem expands the diversity effect also increases. However, the channel estimation turns out to be more troublesome because of increased frequency selectivity as the increased cyclic delay value. In this paper we discussed about dissimilar channel estimation schemes and to conclude we proposed a novel pilot-aided channel estimation scheme for CDD to estimate the channel in an enhanced way. Our scheme estimates each channel separately and achieves significant performance improvement.

scholarly journals Reduction of Phase-Modulation to Intensity-Modulation Conversion Noise Effect Using Delayed Self-Homodyne Optical Orthogonal Frequency Division Multiplexing System

2021 ◽  
Vol 13 (1) ◽  
pp. 1-17
Author(s):  
Younus Nidham Ali Mandalawi ◽  
Syamsuri Yaakob ◽  
Wan Azizun Wan Adnan ◽  
Raja Syamsul Azmir Raja Abdullah ◽  
Mohd Hanif Yaacob ◽  
...  
Keyword(s):  
Phase Modulation ◽  
Orthogonal Frequency Division Multiplexing ◽  
Intensity Modulation ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Noise Effect
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