Meaning
Technical specifications for Long Term Evolution user equipment establish the mandatory radio frequency transmitter and receiver performance boundaries to ensure global network interoperability. Designers and integration engineers consult 3GPP TS 36.101 to verify that cellular modems comply with standard emission limits and sensitivity thresholds under diverse propagation conditions. The document sets the framework for power classes and adjacent channel leakage ratios across designated bands.
Transceiver Requirement
Transmitters must control spurious emissions to prevent interference with neighboring frequency allocations. Compliance with the established values in 3GPP TS 36.101 ensures that the uplink signal maintains high signal-to-noise ratio while preserving spectrum purity. Maximum power reduction formulas dictate how much a device can lower its transmit power when utilizing high-order modulation schemes.
Compliance Testing
Laboratory environments utilize automated test equipment to execute the extensive verification suites defined in the standard. Hardware modules must pass these tests across a full range of operating temperatures and supply voltages to secure carrier certification. Test platforms measure adjacent channel leakage ratio and error vector magnitude continuously while varying the supply current.
Passing ensures that the device behaves predictably when operating near cell edges where signal attenuation is high.
Coexistence Margin
Radio architectures must provide sufficient isolation between the cellular transmitter and nearby collocated radios such as wireless local area networks. Following the prescribed limits protects the receiver from desensitization during simultaneous transmit activities. Protective guard bands and sharp filtering help maintain high throughput.
