Performance Analysis of Best Relaying Protocol Selection with Interferences at Relays

In this paper, we investigate the performance of selecting the best protocol between amplify and forward (AF) and decode and forward (DF) in multiple relay networks with multiple interferences at relays. In the selection scheme, the best protocol between AF and DF is selected depending on the comparisons of signal-to-interference and noise ratio (SINR) for all source-relay links. All relays measure the received SINR to decide forwarding signal or not. When SINR is above a certain threshold then DF is used otherwise AF is used. Particularly, we develop an accurate mathematical model for best relaying protocol by considering the effect of interferences to our scheme. Firstly, we derive the asymptotic closed form expression for the symbol error rate (SER) for the system under study. Also we derive an upper and lower bound of symbol error rate and show how they were tight with exact SER. Furthermore an approximate expression for the outage probability is derived. Numerical results are finally presented to validate the theoretical analysis with a different number of relays

Mathematical Modeling and Control System Simulation of the Batch Canned Food Sterilization Processes

批次生产（加工）是现代工业的一种重要生产方式，在产品制造（加工）方面具有许多突出的优点。目前，该生产方式广泛应用于生物产品加工、精细化工以及食品工业。特别是在食品加工行业，批次生产过程的应用以及相关控制技术已经取得了显著的进展。在食品加工行业中，罐头食品的高压灭菌过程既是一道关键的生产工序，同时也是一个典型的批次生产过程。该生产过程既具有多变量和非线性特点，同时也是一个高能耗的生产过程，因此针对该类过程的建模，仿真以及控制技术的研究，对于保证生产过程的安全、产品的质量以及过程的能效以及可控性都具有十分重要的意义。针对于该过程，本论文进行的主要研究工作如下： 首先，基于物质很能量守恒原理，本论...Batch process is one of the most important industrial processes due to its advantages in various aspects of production and has thus been largely applied in many industries including the bioproducts, fine chemical and food industries. Moreover, the progress in both the application and control of batch processes in the food industry has been significant. Steam retort canned food sterilization is an ...学位：工学硕士院系专业：化学化工学院_化学工程学号：2042012115417