**2.1. Software radio**

In wireless sensor networks (WSNs) that are based on multiple technologies, software radio is required to convert operating parameters between otherwise incompatible communication protocols. The conversion must consider the varying dependencies of these technologies on a number of characteristics that affect communication and performance. For example, in our network architecture, the cluster-head must convert transmission parameters between sensor and mesh communication technologies. These parameters include:


WSNs that are based on software radio enable for the deployment of large-scale and distributed systems that are designed with technologies that are most suitable to their applications. Various technologies may be selected based on throughput requirements, cost of deployment and energy efficiency. Software radio enables these systems to dynamically tune operating parameters around current networking conditions to improve capacity.
