基于有限反馈的多小区协作迫零预编码  

New Applications of Kjeldahi Nitrogen Analyzer

作　　者：李业东[1] Li Yedong （Henan Academy of Agricultural Sciences-Research Center of Agricultural Quality Standard and Testing Technology, Zhengzhou, 450002, China）

机构地区：[1]河南省农业科学院农业质量标准与检测技术研究中心,郑州450002

出　　处：《现代科学仪器》2012年第5期148-149,共2页Modern Scientific Instruments

摘　　要：为了同时抑制小区间干扰和用户间干扰,在多小区多用户系统中,基站通过共享CSI,采用小区间干扰清零（ICIN）预编码算法,将2种干扰迫零。在该算法的基础上,提出了有限反馈情况下的自适应比特分配算法以最小化量化误差引起的速率损耗,更有效地利用反馈比特资源。并且,给出速率损耗保持恒定时,用户所需的总反馈比特数的变化规律。仿真结果表明,提出的自适应比特分配算法优于等比特分配算法,并且采用自适应比特分配时系统速率损耗较小,而复用增益与准确CSI时相同。Kjeldahl nitrogen analyzer is commonly used in laboratory, which is generally used for the determination of protein in food,, dairy products, feed, agricultural-by products, and etc. Distillation is main function of nitrogen analyzer. This paper expands new uses of nitrogen analyzer through improvement and utilization of distillation, thus it enables us to test in a more convenient and quicker way compared with the conventional tests, such as the detection of volatile basic nitrogen, sulfites, alcohol, formaldehyde, volatile acids, ammonia, and essential oils, and the extraction of flavors and frazrances. This paper also concludes the steps, reagents and indicators needed for Kjeldahl and direct distillation.

关 键 词：自适应反馈 多小区协作 随机矢量量化 小区间干扰清零 

分 类 号：TH79[机械工程—仪器科学与技术;机械工程—精密仪器及机械]