Title : 
Lower bounds for q-ary covering codes
         
        
            Author : 
Chen, Wende ; Honkala, Iiro S.
         
        
            Author_Institution : 
Inst. of Syst. Sci., Acad. Sinica, Beijing, China
         
        
        
        
        
            fDate : 
5/1/1990 12:00:00 AM
         
        
        
        
            Abstract : 
The authors prove combinatorial lower bounds for Kq (n,R), the minimal cardinality of any q-ary code of length n and covering radius R. Tables of lower bounds for Kq(n,R) are presented for q=3, 4, 5
         
        
            Keywords : 
codes; combinatorial mathematics; combinatorial lower bounds; covering radius; minimal cardinality; q-ary covering codes; Error correction codes; Hamming distance; Mathematics; Upper bound;
         
        
        
            Journal_Title : 
Information Theory, IEEE Transactions on