Summary
|
For Full-Text PDF, please login, if you are a member of IEICE, or go to Pay Per View on menu list, if you are a nonmember of IEICE. |
|
Prototype Implementation of Real-Time ML Detectors for Spatial Multiplexing Transmission Toshiaki KOIKE Yukinaga SEKI Hidekazu MURATA Susumu YOSHIDA Kiyomichi ARAKI Publication IEICE TRANSACTIONS on Communications Vol.E89-B No.3 pp.845-852 Publication Date: 2006/03/01 Online ISSN: 1745-1345 DOI: 10.1093/ietcom/e89-b.3.845 Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: multiple-input multiple-output (MIMO), spatial multiplexing, maximum-likelihood detection (MLD), field programmable gate array (FPGA), real-time MIMO detector, Full Text: PDF(770.2KB)>>
Summary: We developed two types of practical maximum-likelihood detectors (MLD) for multiple-input multiple-output (MIMO) systems, using a field programmable gate array (FPGA) device. For implementations, we introduced two simplified metrics called a Manhattan metric and a correlation metric. Using the Manhattan metric, the detector needs no multiplication operations, at the cost of a slight performance degradation within 1 dB. Using the correlation metric, the MIMO-MLD can significantly reduce the complexity in both multiplications and additions without any performance degradation. This paper demonstrates the bit-error-rate performance of these MLD prototypes at a 1 Gbps-order real-time processing speed, through the use of an all-digital baseband 4  4 MIMO testbed integrated on the same FPGA chip. | |||||
|
