BACKGROUND Case cancellation (CC) has significant impact on the efficiency of operating room (OR) management, which can be mitigated by taking preventive measures. In this study, using the data of the West China Hospital (WCH), we identified the effect of contributing factors and recommended hospital interventions to facilitate CC prevention. METHOD We conducted a retrospective review of 11,3...

Physiological tremors reduce the precision of surgeons during microsurgery. Active cancellation of tremor will improve the results of microsurgery. It will also lead to the development of more sophisticated surgical procedures, previously considered difficult to perform. Tele-robotic systems, steady-hand robot and Micron active hand-held instrument are currently existing techniques for tremor c...

Multi input multi output system (MIMO) has become a viable option to meet the demand of high data rate wireless communication. But MIMO system performance is severely affected by the presence of co-channel interference (CCI). CCI cancellation in MIMO channel therefore is a challenging area of research. This paper provides a Kalman Filter based CCI cancellation approach which is connected to pha...

In this paper, a new selective and adaptive parallel interference cancellation technique is presented for code division multiple access systems. The proposed technique performs a parallel interference cancellation in multistage, and the computational complexity is reduced by applying the cancellation to unreliable signals only. The performance of the proposed scheme is investigated through comp...

In this paper, Selective Adaptive Parallel Interference Cancellation (SA-PIC) technique is presented for Multicarrier Direct Sequence Code Division Multiple Access (MC DS-CDMA) scheme. The motivation of using SA-PIC is that it gives high performance and at the same time, reduces the computational complexity required to perform interference cancellation. An upper bound expression of the bit erro...

The potential capacity gains of coordinated processing in the reverse link of a cellular system are evaluated. Three different matched filter-based receiver schemes, successive intra-cell interference cancellation, successive intraand intercell interference cancellation, and centralized successive interference cancellation, are analyzed considering different path loss exponents and various limi...

The existing mobile communication system suffer from problems like frequency selective fading and multi-path signals, multiple access interference due to imperfect nonorthogonal codes and narrow band interference due to coexisting systems. Multi-carrier Code Division Multiple Access (MC-CDMA) technique can combat these problems efficiently owing to its inherent properties. The objective of this...

Crosstalk in DSL leads to significant performance degradation and large loses in data-rate. Several crosstalk cancellation techniques have been proposed to address this problem, however, in the existing literature the analysis of these approaches is based on SNR calculations and the SNR-gap approximation. Furthermore, for crosstalk cancellation techniques based on decisionfeedback, the effect o...

The workflow of telecommunication operation support systems (telecomOSSs), which are a typical example of a heterogeneous domain model, often involves complicated cancellation processing. This paper proposes a ruledriven cancellation method and a middleware component that implements the method. They separate the cancellation process from the workflow and enable the OSSs to be made more flexible.

—Successive interference cancellation (SIC) is a technique, which can increase the capacity of a DS-CDMA system. Increase in capacity has been shown to approach theoretical limits for an AWGN channel [1]. For a practical channel from the viewpoint of cellular systems, significant increase in capacity using SIC has been shown in [2] even in the presence of estimation errors up to 50%. This capac...