Global ETD Search
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Showing 1 to 4 of 4 for “"time division duplex"”.
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Different Multiple Input Multiple Output Systems
… in cellular and WLAN systems to cater for multimedia services. Recently researchers have proposed di erent architectures for materializing the potential of the MIMO scheme. VBLAST (Vertical-Bell Labs Space Time) is a popular architecture that will play an important role in future …
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Channel Related Optimization of Wireless Communication Systems
… multicarrier techniques and orthogonal frequency division multiplex, OFDM, but some of the problems apply to single carrier systems as well. The influence of different pilot patterns is analyzed when pilot symbol assisted modulation, PSAM, is used in OFDM systems. It is desirable to decrease the …
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Fast blind adaptive equalisation for multiuser CDMA systems
… strategy is developed for the partially loaded time division duplex (TDD) component of the universal mobile telecommunications system (UMTS). In addition to training-based equalisation performed using the midamble of a data packet, some of the unused spreading codes are exploited to upload …
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3D Massive MIMO and Artificial Intelligence for Next Generation Wireless Networks
… power allocation strategies are identified for a time-division-duplex (TDD) multi-cell multi-user massive FD-MIMO network. Utilizing channel reciprocity, DL channel state information (CSI) feedback is eliminated and the DL multi-user MIMO precoding is linked to the uplink (UL) direction of arrival …