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A framework for implementing spatial multiplexing using an Electronically Steerable Parasitic Array Radiator (ESPAR) antenna is presented. While traditional Multi-Element Arrays (MEA) show great potential for meeting the increasing demand for higher data rates, they come at the expense of computationally demanding signal processing, larger size, and higher consumption of DC power, making traditional MEA impractical at users' hand-held devices. In this paper, the authors introduce a novel methodology for using ESPAR antennas as a compact, cheap and less power-hungry MEA, for spatially multiplexing BPSK symbols, while still providing comparable spectral efficiency and performance as traditional MEA.
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