“…For the sake of concreteness, we consider a symmetric scenario with n = n T = n R , but similar analysis can be performed for n T π n R . As n is driven to inÞnity, the bandwidth efÞciency converges 18,19 to (14.12) indicating that the bandwidth efÞciency grows linearly with the number of (uncorrelated) antennas, which is a key result that contrasts with conventional diversity systems, using multiple antennas at either transmitter or receiver exclusively, wherein the growth is at best logarithmic. The bandwidth efÞciency becomes particularly revealing at high SINR, wherein Equation 14.12 particularizes 9 to The attainable throughput in B = 5 MHz as a function of the range is depicted in Figure 14.3, parameterized by the number of transmit-and-receive antennas.…”