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Recent studies have shown the feasibility of full-duplex transceivers, which have the potential to double the system spectral efficiency by allowing transmission and reception at the same time on the same frequency. In this paper, we consider the radio resource allocation problem for full-duplex systems that jointly maximize the uplink and downlink sum-rate. The problem is coupled between uplink and...
Good cement bonding quality is significant for an oil well to provide zonal isolation and to ensure layered exploitation. Segmented bond tool (SBT) is efficient to detect the bonding conditions between casing and cement. In order to learn more about the physical basis of the SBT equipment, the influence of debonding area on head wave is investigated. With the debonding area increasing in size from...
This work addresses joint transceiver optimization for multiple-input, multiple-output (MIMO) systems. In practical systems the complete knowledge of channel state information (CSI) is hardly available at transmitter. To tackle this problem, we resort to the codebook approach to precoding design, where the receiver selects a precoding matrix from a finite set of predefined precoding matrices based...
In this paper, we propose a novel linear transmit precoding strategy for multiple-input, multiple-output (MIMO) systems employing improper signal constellations. In particular, improved zero-forcing (ZF) and minimum mean square error (MMSE) precoders are derived based on modified cost functions, and are shown to achieve a superior performance without loss of spectrum efficiency compared to the conventional...
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