In networked signal processing systems, dataflow graphs can be used to

describe the processing on individual network nodes. However, to analyze the

correctness and performance of these systems, designers must understand

the interactions across these individual "node-level'' dataflow graphs --- as

they communicate across the network --- in addition to the characteristics of

the individual graphs.

In this thesis, we present a novel simulation environment, called the

NS-2 -- TDIF SIMulation environment (NT-SIM). NT-SIM provides integrated co-simulation of networked systems and combines the

network analysis capabilities provided by the Network Simulator (ns) with

the scheduling capabilities of a dataflow-based framework, thereby providing

novel features for more comprehensive simulation of networked signal

processing systems.

Through a novel integration of advanced tools for network and dataflow graph

simulation, our NT-SIM environment allows comprehensive simulation and analysis

of networked systems. We present two case studies that concretely demonstrate

the utility of NT-SIM in the contexts of a heterogeneous signal processing and

data mining system design.