A wireless network is considered, in which two spatially distributed users transmit narrow-band signals simultaneously over the same channel using the same power. User separation is achieved by oversampling the received signal and formulating a virtual multiple-input multiple-output (MIMO) system based on the resulting polyphase components. Because of oversampling, high correlations can occur between the columns of the virtual MIMO system matrix which can be detrimental to user separation. A novel pulse-shape waveform design is proposed that results in low correlation between the columns of the system matrix, while it exploits all available bandwidth as dictated by a spectral mask. It is also shown that the use of successive interference cancelation in combination with blind source separation further improves the separation performance.

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polyphase virtual multipleinput multipleoutput mimo system successive interference cancelation blind source separation spectral mask pulseshape waveform design

Poor HVincent,Koivunen Visa,Liu Xin,Petropulu AthinaP,.Blind Separation of Two Users Based on User Delays and Optimal Pulse-Shape Design. 2010 (1),.

Poor HVincent,Koivunen Visa,Liu Xin,Petropulu AthinaP,"Blind Separation of Two Users Based on User Delays and Optimal Pulse-Shape Design" 2010

Poor HVincent,Koivunen Visa,Liu Xin,Petropulu AthinaP,"Blind Separation of Two Users Based on User Delays and Optimal Pulse-Shape Design"