术后恶心呕吐(Postoperative nausea and vomiting, PONV)成为现如今最常见的手术并发症之一,防治PONV的方法主要有药物治疗和非药物治疗。药物治疗常存在相关药物副作用,寻求绿色、高效、无毒副作用的治疗手段是很有必要的。在中医学中...术后恶心呕吐(Postoperative nausea and vomiting, PONV)成为现如今最常见的手术并发症之一,防治PONV的方法主要有药物治疗和非药物治疗。药物治疗常存在相关药物副作用,寻求绿色、高效、无毒副作用的治疗手段是很有必要的。在中医学中,针灸作为治疗呕吐的一种方法已有多年历史,在防治PONV方面有其自身的优势。展开更多
In this paper,the online power control and rate adaptation for a wireless communication system with energy harvesting(EH)are investigated,in which soft decision decoding is adopted by the receiver.To efficiently utili...In this paper,the online power control and rate adaptation for a wireless communication system with energy harvesting(EH)are investigated,in which soft decision decoding is adopted by the receiver.To efficiently utilize the harvested energy and maximize the actual achievable transmission rate under the constraints of the available channel codes and modulation schemes,the transmit power,code rate and modulation order are jointly optimized.The Lyapunov framework is used to transform the long-term optimization problem into a per time slot optimization problem.Since there is no theoretical formula for the error rate of soft decision decoding,the optimization problem cannot be solved analytically.A table to find the optimal modulation order and code rate under the different values of signal-to-noise ratio(SNR)is built first,and then a numerical algorithm to find the solution to the optimization problem is given.The feasibility and performance of the proposed algorithm are demonstrated by simulation.The simulation results show that compared with the algorithms to maximize the theoretical channel capacity,the proposed algorithm can achieve a higher actual transmission rate.展开更多
文摘术后恶心呕吐(Postoperative nausea and vomiting, PONV)成为现如今最常见的手术并发症之一,防治PONV的方法主要有药物治疗和非药物治疗。药物治疗常存在相关药物副作用,寻求绿色、高效、无毒副作用的治疗手段是很有必要的。在中医学中,针灸作为治疗呕吐的一种方法已有多年历史,在防治PONV方面有其自身的优势。
基金National Nature Science Foundation of China(61971080).
文摘In this paper,the online power control and rate adaptation for a wireless communication system with energy harvesting(EH)are investigated,in which soft decision decoding is adopted by the receiver.To efficiently utilize the harvested energy and maximize the actual achievable transmission rate under the constraints of the available channel codes and modulation schemes,the transmit power,code rate and modulation order are jointly optimized.The Lyapunov framework is used to transform the long-term optimization problem into a per time slot optimization problem.Since there is no theoretical formula for the error rate of soft decision decoding,the optimization problem cannot be solved analytically.A table to find the optimal modulation order and code rate under the different values of signal-to-noise ratio(SNR)is built first,and then a numerical algorithm to find the solution to the optimization problem is given.The feasibility and performance of the proposed algorithm are demonstrated by simulation.The simulation results show that compared with the algorithms to maximize the theoretical channel capacity,the proposed algorithm can achieve a higher actual transmission rate.
