Massive MIMO (massive multiple-input multiple-output) is a key technology for 5G to improve system capacity and spectrum utilization.In the 5G era, Massive MIMO technology is widely used in base stations.The number of Massive MIMO antennas used in 5G can reach 64 or 128.In the future, when themillimeter wave technologyturns to be more reliable and cost effective, the antenna size is expected to be……
1.Combiner:In the wireless mobile phone communication system, the main function of the combiner is to combine the input multi-band signals and output them to the same indoor distribution system.The combiner is generally used at the transmitting end. Its function is to combine two or more radio frequency signals from different transmitters into one and send it to the radio frequency device transmit……
Long-Term Evolution (LTE) is a wireless broadcast communication standard for mobile devices and data ports based on GSM/EDGE and UMTS/HSPA technologies. The standard was developed by 3GPP (3rd Generation Partnership Project) and intended as a GSM/aims to provide a path for the upgrade of GSM/UMTS networks and CDMA2000 networks. The following are the 3GPP-based advanced requirements for LTE: F……
On May 6, Viavi, the Test and Measurement manufacturer announced its latest statistics on global 5G development. The data shows that China currently has 356 5G cities, the United States has 296 5G cities, and the Philippines ranks third in the world with 98 5G cities. By region, the EMEA (Europe, Middle East and Africa) region has surpassed Asia Pacific, including Greater China (APAC), a……
According to statistics news on March 17th., AT&T, Verizon, T-Mobile US and other US companies have spent about a total of $117 billion (US dollars) in the purchase of 5G mid-band spectrum in the past 12 months.These include:1. Last year, the purchase of C-band 280 MHz spectrum totaled about $81 billion (US dollars) ,the FCC’s largest ever spectrum auction, after which AT&T and Verizon eac……
What is LoRa®?LoRa uses unlicensed sub-GHz wireless bands such as 433 MHz (Europe), 868 MHz (Europe) and 915 MHz (North America). It allows long distance transmission (10km+ in suburbs, up to 2km in urban areas) and still maintains extremely low power consumption (sub-uA).There are two expressions of this technology: LoRa, physical layer; LoRaWAN (Long Range Wide Area Network), upper layer. &……
