Adaptive Modulation TxPower Optimization

RF power output has been a major planning aspect for engineers since the start of radio transmission. Undoubtedly important, RF Power level is only one of many factors that determine a successful wireless network. To effectively evaluate and differentiate between various microwave systems and link performance, operators should be able to examine several key aspects of RF power output. Propagation and antennas set aside, parameters such as receiver threshold, modulation type and RF power level are the most important to consider. However, deciphering the diverse range of often incomparable radio system data sheets may prove a challenge. Adaptive Modulation schemes and ATPC (Automatic Transmit Power Control) already provide point-to-point microwave systems with a high degree of flexibility, ensuring better efficiency under changing weather conditions. This paper discusses how RF output power can now also be controlled dynamically so as to ensure the highest power efficiency under changing modulations. We will also present the various methods in which RF output power control is implemented by Ceragon’s FibeAir® IP-10 point-to-point microwave solution.