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Table 1 List of symbols, time block t has been omitted for simplicity

From: A dynamic clustering algorithm for downlink CoMP systems with multiple antenna UEs

Symbol Definition
Set of BSs, each equipped with M antennas
Set of UEs, each equipped with N antennas
Set of integers, each identifying a candidate BS clusters
J c Set of BSs forming candidate BS cluster c, cC
Set of scheduled UEs
U c Set of UEs corresponding to BSs in J c (see (12))
S c Set of scheduled UEs corresponding to BSs in J c (see (16a))
H k,j Channel between BS j and UE k
H ̂ k , j Estimated channel between BS j and UE k
H ̂ k ( c ) Estimated channel between BSs in J c and UE k
G k,j Precoding matrix used by BS j to serve UE k
G k ( c ) Precoding matrix used by BSs in J c to serve UE k
l k Transmission rank allocated to UE k
P k Power vector allocated to UE k
R ̂ ( c ) Estimated weighted sum rate achieved by BSs in J c
R ̂ k Estimated rate achieved by UE k
R k Effective rate achieved by UE k