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Traumatic hip dislocation is a severe injury with the potential for significant morbidity and mortality. Bilateral hip dislocation is rare representing 1.25% of all hip dislocations.A 19-year-old male had a high-speed motor vehicle accident. After stabilizing the patient, it was noticed that the position of the right lower limb was in adduction and internal rotation while the left was in external...
Upper tract urothelial carcinoma (UC) is an uncommon tumor. Ectopic kidney is also a rare entity. The combination of these two conditions is very rare. A 49-year-old male complained of right flank pain with hematuria. On CT scan he was found to have a malrotated right kidney with soft tissue seen in the upper calyceal group and a normal left kidney. Diagnostic cystoscopy was unremarkable. Radical...
Massive MIMO is an emerging technology that has the potential of bringing huge improvements to wireless communications in the future. This paper investigates the effects of spatial correlation on the capacity and energy efficiency of massive MIMO. We use a channel covariance matrix that is generated according to the one ring model. We consider linear minimum mean square error (LMMSE) for estimating...
The use of massive multiple input multiple output (MIMO) systems can improve the performance of energy efficiency and increase the capacity limits due to the improvement of the spatial correlation. The effect of the exponential correlation model on the massive MIMO energy and spectral efficiencies is investigated using a base station (BS) with a large number of antennas and a single antenna user terminal...
In this paper the impact of exponential correlation model on massive multiple input multiple output (MIMO) channel estimation is analyzed using a large number of antennas in the base station (BS) and a user terminal. We consider pilot-based channel estimation in the UL channel. The Linear minimum mean square error (LMMSE) estimator is used to investigate the effect of correlation factor on the average...
Large scale antenna arrays technology has the potential of bringing many advantages to future wireless systems. Energy and spectral efficiency are going to be the most important features. Hence, accurate estimate of channel state information (CSI) makes these advantages achievable. This paper investigates the effects of angular spread on the accuracy of channel estimation for massive multiple input...
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