TY - JOUR AU - Mostafa, Raqibul AU - Gozali, Ran AU - Palat, Ramesh Chembil AU - Robert, Max AU - Newhall, William G. AU - Woerner, Brian D. AU - Reed, Jeffrey H. PY - 2005 DA - 2005/09/21 TI - Design and Implementation of a DSP-Based MIMO System Prototype for Real-Time Demonstration and Indoor Channel Measurements JO - EURASIP Journal on Advances in Signal Processing SP - 387646 VL - 2005 IS - 16 AB - The design and implementation of the Virginia Tech Space-Time Advanced Radio (VT-STAR), a multiple antenna element space-time (ST) processing prototype testbed, is presented. The testbed is a research tool for comparing practical and theoretical performance metrics (e.g., throughput, link reliability) in different wireless channel conditions. The prototype builds around software-defined radio (SDR) concepts on a DSP platform and provides the flexibility to implement various forms of ST techniques. Different components of the system are described in detail, including the software implementation, I/O schemes with custom hardware, and data transfer mechanisms between the DSP and the host PC. Two different example realizations are presented, a real-time demonstration and an offline measurement tool. Finally, some representative measurement results obtained in indoor environments are presented. These results show VT-STAR to be a promising tool for performing MIMO experiments and generating channel measurements that can complement simulation studies in this area. SN - 1687-6180 UR - https://doi.org/10.1155/ASP.2005.2673 DO - 10.1155/ASP.2005.2673 ID - Mostafa2005 ER -