A simple angular transmit diversity scheme using a single RF frontend for PSK modulation schemes

A Simple angular transmit diversity scheme based on switching between a pair of weakly-correlated beam patterns at one end of the wireless link (the wireless handheld terminal) in an outdoor macro-cellular radio channel is proposed. The diversity scheme is employed using a simple switched parasitic array (SPA) with a single transceiver, and an array area of 0.0625 square wavelengths. The scheme which requires no channel state information (CSI) at the transmitter, provides mainly a diversity gain to combat against multipath fading. The performance/capacity of the proposed diversity scheme is compared (through simulations) to its counterpart spatial transmit diversity scheme under the same channel conditions.