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Raza Ali Nawaz Syed Junaid Ahmed Abrar Wyne Shurjeel Muhammad Bilal Patwary Mohmammad N. Prasad Ramjee 《Wireless Personal Communications》2022,122(4):3545-3571
Wireless Personal Communications - Non-orthogonal multiple access (NOMA) scheme, potentially enabling high spectral efficiency, is one of the key technological innovations in the 5th generation... 相似文献
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Waqas Nawaz Khan Muhammad Zubair Shurjeel Wyne Fredrik Tufvesson Katsuyuki Haneda 《Wireless Personal Communications》2013,71(1):707-717
Time-reversal (TR) signal processing has the potential to focus the transmitted signal at a desired receive (Rx) location in both space and time. At lower frequency bands, TR in conjunction with array antennas at transmit (Tx) or Rx has been shown to significantly improve its focusing performance relative to the case of single antennas at both link ends. This work for the first time investigates TR processing for multi-antenna systems in the 60 GHz band. We consider both multiple-input-single-output and single-input-multiple-output (SIMO) channels measured in the 60 GHz band in a conference room environment and investigate the effect of array size and its orientation on spatial and temporal compression properties of TR. It is observed that the root mean square (RMS) delay spread can be reduced significantly by the application of TR in the 60 GHz band and that the orientation of the Rx array significantly affects TR performance for SIMO systems. 相似文献
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