Title : 
Comments on `Fair and Efficient Relay Selection and Spectrum Allocation for Multi-User and Multi-Relay Cooperative Cellular Networks´
         
        
            Author : 
Yinglei Teng ; Haoman Xu
         
        
            Author_Institution : 
Sch. of Electron. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China
         
        
        
        
        
        
        
        
            Abstract : 
In a recent letter, Zhang et al. proposed a relay selection and spectrum allocation scheme in the multi-user and multi-relay cooperative cellular networks. This comment points out one inaccurate equation and the erroneous figures for the above letter. Meanwhile, the correct equation and figures are provided.
         
        
            Keywords : 
cellular radio; cooperative communication; multi-access systems; radio spectrum management; erroneous figures; multirelay cooperative cellular networks; multiuser networks; relay selection; spectrum allocation scheme; Convergence; Equations; Indexes; Mathematical model; Relays; Resource management; Topology; Cooperative rate; fairness index; relay selection;
         
        
        
            Journal_Title : 
Communications Letters, IEEE
         
        
        
        
        
            DOI : 
10.1109/LCOMM.2013.011513.122482