Figure 4
From: Performance of opportunistic fixed-beam spatial multiplexing in OFDMA uplink
Simulation scenario. BS employs either traditional antenna patterns or Butler beam patterns while MT employs omnidirectional antenna patterns. The azimuth direction Ω of MT can be varied and the MT antenna array orientation Ψ is uniformly distributed. Comparative simulation results are obtained using the same transceiver (TRX) and radio channel models in both the antenna domain (reference case) and the Butler beam domain the only difference being the different antenna/beam patterns at the BS.