Abstract
In this paper, an orthogonal complementary code (OCC)-selection-based high-efficient ultrawideband (UWB) spatial modulation (SM) system has been proposed to achieve higher transmission rate and better system performance. The OCC is employed to spread the spectrum, carry extra information bits, and alleviate the multipath interference simultaneously. Meanwhile, the SM technique is adopted to further increase the system bit rate and overcome the synchronization and interference issues of a multiantenna system. In the proposed UWB SM system, the information bits are conveyed through three ways: direct bipolar pulse amplitude modulation, indirect spread spectrum code selection, and transmit antenna selection. To further enhance the system performance over a multipath fading channel, the selective Rake receiver and maximum ratio combining detection are utilized. A closed-form expression of the system bit error rate is derived through the moment-generating function. Numerical results are provided to verify the theoretical analysis and show the efficiency and performance improvement of the proposed OCC-selection-based UWB SM system.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
