5 Результаты
Стандарт беспроводной связи Bluetooth® имел беспрецедентный успех. Его поддерживают практически все смартфоны, ПК, автомобили, развлекательное оборудование и носимые устройства. Компания Bluetooth SIG сообщает, что в настоящее время используются более 8 миллиардов устройств. Bluetooth поддерживает технологии Интернета вещей (IoT) и методы пеленгации, что позволяет уверенно смотреть в будущее.В этом официальном документе сведена информация о различных технологиях с ориентацией на физический уровень в соответствии с базовой спецификацией версии 5.1.
июн. 05, 2019 | Номер AN 1MA108
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.
Aug 31, 2017 | Номер AN 1ST001
High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA) optimize UMTS for packet data services in the downlink and uplink, respectively. Together, they are referred to as High Speed Packet Access (HSPA). Within 3GPP Release 7, 8, 9 and 10, further improvements to HSPA have been specified in the context of HSPA+ or HSPA evolution. This Application Note describes how HSPA+ features can be tested using Rohde & Schwarz instruments.
Apr 26, 2013 | Номер AN 1MA121
This white paper summarizes the technology options for supporting voice and short message service (SMS) in LTE, including circuit switched fallback (CSFB), SMS over SGs, and voice over LTE (VoLTE).
May 11, 2011 | Номер AN 1MA197
This application note explains the fundamentals of the cell search and cell selection and reselection procedures required for both modes of UMTS Long Term Evolution: FDD and TDD. It describes how to generate and analyze the required signals using Rohde & Schwarz test and measurement solutions. The application note also shows how to perform interoperability tests and terminal conformance tests according to the baseline of the 3GPP specifications for protocol conformance and Radio Resource Management (RRM).
Sep 17, 2009 | Номер AN 1MA150