tailieunhanh - Báo cáo hóa học: " FPGA-Based Communications Receivers for Smart Antenna Array Embedded Systems"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: FPGA-Based Communications Receivers for Smart Antenna Array Embedded Systems | Hindawi Publishing Corporation EURASIP Journal on Embedded Systems Volume 2006 Article ID 81309 Pages 1-13 DOI ES 2006 81309 FPGA-Based Communications Receivers for Smart Antenna Array Embedded Systems Constantin Siriteanu 1 2 Steven D. Blostein 1 and James Millar3 1 Department of Electrical and Computer Engineering Queen s University Kingston ON Canada K7L 3N6 2 Communications Signal Processing Laboratory Department of Electrical and Computer Engineering Hanyang University Seoul Korea 3 CMC Microsystems Kingston ON Canada K7L 3N6 Received 15 December 2005 Revised 7 May 2006 Accepted 2 June 2006 Field-programmable gate arrays FPGAs are drawing ever increasing interest from designers of embedded wireless communications systems. They outpace digital signal processors DSPs through hardware execution of a wide range of parallelizable communications transceiver algorithms at a fraction of the design and implementation effort and cost required for application-specific integrated circuits ASICs . In our study we employ an Altera Stratix FPGA development board along with the DSP Builder software tool which acts as a high-level interface to the powerful Quartus II environment. We compare single- and multibranch FPGA-based receiver designs in terms of error rate performance and power consumption. We exploit FPGA operational flexibility and algorithm parallelism to design eigenmode-monitoring receivers that can adapt to variations in wireless channel statistics for high-performing inexpensive smart antenna array embedded systems. Copyright 2006 Constantin Siriteanu et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Conventional wireless communications systems employ a single receiving antenna. Enhanced antenna array receivers employing beamforming BF and maximal-ratio combining MRC can .