scholarly journals Semantic Security via Seeded Modular Coding Schemes and Ramanujan Graphs

2021 ◽  
Vol 67 (1) ◽  
pp. 52-80
Author(s):  
Moritz Wiese ◽  
Holger Boche
2013 ◽  
Vol 8 (2) ◽  
pp. 26-31
Author(s):  
R. M. J. Priya ◽  
◽  
S Gayathri ◽  
C. Lakshmipriya ◽  
M. Arunkumar ◽  
...  

Author(s):  
Mais Sami Ali ◽  
Abdulkareem Abdulrahman Kadhim

1995 ◽  
Vol 31 (5) ◽  
pp. 341-342 ◽  
Author(s):  
F.H. Ali ◽  
S.A.G. Chandler ◽  
S. Soysa

Author(s):  
Jung Hyun Bae ◽  
Ahmed Abotabl ◽  
Hsien-Ping Lin ◽  
Kee-Bong Song ◽  
Jungwon Lee

AbstractA 5G new radio cellular system is characterized by three main usage scenarios of enhanced mobile broadband (eMBB), ultra-reliable and low latency communications (URLLC), and massive machine type communications, which require improved throughput, latency, and reliability compared with a 4G system. This overview paper discusses key characteristics of 5G channel coding schemes which are mainly designed for the eMBB scenario as well as for partial support of the URLLC scenario focusing on low latency. Two capacity-achieving channel coding schemes of low-density parity-check (LDPC) codes and polar codes have been adopted for 5G where the former is for user data and the latter is for control information. As a coding scheme for data, 5G LDPC codes are designed to support high throughput, a variable code rate and length and hybrid automatic repeat request in addition to good error correcting capability. 5G polar codes, as a coding scheme for control, are designed to perform well with short block length while addressing a latency issue of successive cancellation decoding.


Author(s):  
XIANGBIN YU ◽  
GUANGGUO BI

Space-time block (STB) coding has been an effective transmit diversity technique for combating fading recently. In this paper, a full-rate and low-complexity STB coding scheme with complex orthogonal design for multiple antennas is proposed, and turbo code is employed as channel coding to improve the proposed code scheme performance further. Compared with full-diversity multiple antennas STB coding schemes, the proposed scheme can implement full data rate, partial diversity and a smaller complexity, and has more spatial redundancy information. Moreover, using the proposed scheme can form efficient spatial interleaving, thus performance loss due to partial diversity is effectively compensated by the concatenation of turbo coding. Simulation results show that on the condition of the same system throughput and concatenation of turbo code, the proposed scheme has lower bit error rate (BER) than those low-rate and full-diversity multiple antennas STB coding schemes.


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