A dual-polarization communication model with consideration of signal delay along receiving antennas in wireless sensor networks is proposed. Exact expressions for channel capacity and bit error rate are derived. It is manifested that the proposed dual-polarization model can improve channel capacity or reduce bit error rate under same data rate and total transmit power as compared with single antenna communication system if receive node is deployed appropriately. The dual-polarization model can significantly lower transmission power per bit requirement and prolong networks' lifetime. The robustness is displayed on small polarization angle.
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