Adaptive Coding and Modulation: Enhance Operational Efficiency of Wireless Backhaul

With the advent of newer data services and increase in usage of smart phones, there is an increased demand for data traffic. This puts wireless backhaul operators in catch up mode. To service this increased demand, it becomes critical for operators to maximize spectrum usage and increase capacity for wireless backhaul networks. This paper explains how Shyam's RM Series radio solutions can help you maximize operational efficiency of your wireless backhaul network through Adaptive Coding and Modulation (ACM). HIGHLIGHTS In 2011, Shyam introduced its MIMO based wireless backhaul solution which features advanced ACM technique to enable operators to simplify network planning and help operators to achieve better operational efficiency. Enables planning for higher capacity along with availability. Improved spectrum efficiency: In good conditions, due to lower fading and lower loss, link operates at higher modulations, thereby providing higher spectrum efficiency. Improved Link Efficiency: By shifting link to lower modulation and coding, resulting improvement in RSL and extra fade margin helps in higher link availability. Hitless and errorless: No bit errors or suspension of traffic during change of modulation. Fast shifting: Quick shifts to cope with up to 10 dB/sec fading. Flexible control: user defines minimum MCS and guaranteed bandwidth requirements. Alarm is raised if guaranteed bandwidth requirements are not met. Different modulation rates for uplink and downlink.