5 结果
测量装置简单、可重复。测量结果准确、可复验。
lte user equipment (ue) receiver performance has significant impact to cellular radio network coverage and capacity. it determines the maximum data throughput across the air interface between the lte base station (enb, evolved node b) and the mobile network subscriber ue, thus it determines the total capacity across the air interface. therefore, it is one of the most important measurements to verify the actual receiver performance of individual devices, and a key metric to compare different devices, in particular.this paper shall give an introduction to receiver performance measurements and discusses the measurement metrics as well as the challenges of over the air (ota) measurements.
radio frequencies in bands around 28 ghz are being discussed as candidates for mobile communications of the fifth generation (5g). beam steering will be a key feature in the context of 5g. it will be a major challenge to test the beam steering capabilities of base stations and user equipment in every phase from research and development through production. conducted measurements will be mainly replaced by over-the-air measurements of electromagnetic radiation. rohde & schwarz offers the r&s®nrpm over-the-air (ota) power measurement solution that perfectly fits such measurement needs.part of this solution are the r&s®nrpm-a66 antenna modules. they have integrated diode detectors. thus, there are no cables between the antenna and the detector as in traditional setups. this avoids high and potentially unknown rf losses. the r&s®nrpm-a66 antenna modules with their integrated diode detectors are factory calibrated, which means that the user does not have to calibrate them to achieve highly accurate measurement results.this application note contains theoretical background on ota power and pattern measurements. it gives step-by-step instructions for the verification of the power level and the radiation pattern of a device under test (dut) in comparison to a golden device, and it presents an approach for verifying the accuracy of beam steering.
出于近来的安全考量，超宽带 (uwb) 技术正逐渐应用到汽车钥匙链中。罗德与施瓦茨提供了一个灵活的测试九游官网下载的解决方案，可满足研发以及高吞吐量生产环境中的高需求。
5g networks will need to offer more capacity and flexibility while lowering the operational expenses of the system. two new technologies can simultaneously address both the increase in capacity and the increase in energy efficiency: virtualization & massive mimo. this white paper provides an overview of test solutions addressing current and future requirements for antenna verification including both conducted and over-the-air (ota) test methods, which result from applying massive mimo antenna technology.this white papers complements the white paper (1ma276) from rohde & schwarz, which introduces fundamental theory behind beamforming antennas and provides calculation methods for radiation patterns, a number of simulation results as well as some real world measurement results for small linear arrays.