Abstract:
Interleave Division Multiple Access (IDMA) can be considered as a special case of Code Division Multiple Access (CDMA). A key principle of IDMA systems is user separation by means of user defined chip-level interleavers instead of by unique signatures as in conventional CDMA. IDMA inherits many advantages of CDMA in addition to having a detection algorithm of much lower complexity and possessing many desirable features to meet the challenges of future wireless systems.
IDMA system has already been successfully simulated using Visual C++ but the process is time consuming owing to the receiver’s chip by chip iterative detection. The purpose of this research is to optimize the IDMA scheme for deployment in a real time environment by significantly reducing the system’s processing delays.
In this thesis an IDMA system model is implemented in SIMULINK in which dependent iterative loops are removed, processing delays are reduced and a software test bed for IDMA is developed. This test bed can be used to study the performance of IDMA system with varying system parameters and channel conditions. In addition, the model has been successfully compiled in SIMULINK’s Real Time Workshop (RTW) which facilitates the transfer of IDMA model to a variety of compatible hardwares, thus ensuring that the model is ready for deployment in real time environment.
