How Subscriber types and Limiting RF Link for LTE
Subscriber Equipment may take different form factors. It may resemble alert 3G phones, or maybe a CPE device, or a device connected to a USB dongle or USB port. RF different features, such as different transmission power levels, different Receive diversity schemes, different antenna patterns and gains, it would need Appropriate to perform RF modeling. The cost of each device, a design will be a factor in But will not go into this debate.
By the manufacturer to obtain the necessary information is transmitted Power, noise statistics, the number of antennas at both transmit and receive directions, Receive antenna, horizontal and vertical antenna pattern, and any other special characteristics Products or receive sensitivity of the ERP effect.
Limiting RF Link for LTE
LTE system to determine the link budget, link budgets for each of the channels to determine need. The lowest among all the channels, the maximum allowable path loss and thus limited link-site coverage will be limited.
The typical limiting link is the uplink traffic channel. The following are various differences that can exist between the various channels.
- The adaptive antenna array gain will only impact the downlink traffic channel. [Impact to downlink Tx EIRP]
- Modulation, coding & repetition level can be set differently between the uplink and downlink,The different MCS levels correspond to different SNR values, which then impact the effective receiver sensitivity value.
- The number of occupied resource blocks may be different between the various channels, which will vary the effective channel bandwidth.