4 citations · 9 across the 10 of their papers we have counts for
10 papers
New constructions of cyclic subspace codes
Shuhui Yu, Lijun Ji
A subspace of a finite field is called a Sidon space if the product of any two of its nonzero elements is unique up to a scalar multiplier from the base field. Sidon spaces, introd…
Linear -AONTs do Exist
Xin Wang, Jie Cui, Lijun Ji
A -all-or-nothing transform (AONT) is a bijective mapping defined on -tuples over an alphabet of size , which satisfies that if any of the outputs are give…
Constructions of Augmented Orthogonal Arrays
Xin Wang, Lijun Ji, Yun Li +1
Augmented orthogonal arrays (AOAs) were introduced by Stinson, who showed the equivalence between ideal ramp schemes and augmented orthogonal arrays (Discrete Math. 341 (2018), 299…
New Existence and Nonexistence Results for Strong External Difference Families
Jingjun Bao, Lijun Ji, Ruizhong Wei +1
In this paper, we use character-theoretic techniques to give new nonexistence results for -strong external difference families (SEDFs). We also use cyclotomic classes to…
Frequency hopping sequences with optimal partial Hamming correlation
Jingjun Bao, Lijun Ji
Frequency hopping sequences (FHSs) with favorable partial Hamming correlation properties have important applications in many synchronization and multiple-access systems. In this pa…
Combinatorial Constructions of Optimal Optical Orthogonal Signature Pattern Codes
Jingyuan Chen, Yun Li, Lijun Ji
Optical orthogonal signature pattern codes (OOSPCs) play an important role in a novel type of optical code-division multiple-access (CDMA) network for 2-dimensional image transmiss…