Mobile Ad-hoc Networks is the collection of wireless nodes that can exchange information dynamically among them without pre-existing fixed infrastructure. Here the routing protocols are evaluated over noisy channels. Three protocols used here are Optimum Link State Routing Protocol (OLSR-Proactive) Routing protocol, Zone Routing protocol (ZRP-Hybrid), Ad-hoc On-Demand Distance Vector (AODV-reactive) routing protocol, taking traffic density and mobility. The basic fading environments such as AWGN, Rayleigh and Ricean. This paper presents a simulation-based comparison and performance analysis on different parameters like Throughput, and Average End-to-End delay for different traffic densities and node mobility.