Experiments on Real-Time 1-Gbps Packet Transmission Using QRM-MLD with ASESS in MIMO-OFDM Broadband Packet Radio Access

Content Provider	Semantic Scholar
Author	Kawai, Hiroyuki Noriyuki Kawamoto, Junichiro Higuchi, Kenichi Sawahashi, Mamoru
Copyright Year	2005
Abstract	This paper presents experimental results on real-time packet transmission of greater than 1 Gbps using 4-by-4 multiple-input multiple-output multiplexing (MIMO) employing Maximum Likelihood Detection (MLD) with a decreased level of computational complexity in Orthogonal Frequency Division Multiplexing (OFDM) radio access. We apply our original algorithm called adaptive selection of surviving symbol replica candidates based on the maximum reliability (ASESS) in MLD employing QR decomposition and the M-algorithm(QRM-MLD) to reduce the extremely high level of computational complexity in the conventional MLD. The experimental results using multipath fading simulators are in good agreement with the computer simulation results, confirming the effectiveness of our original signal detection algorithm, channel estimation filter, and likelihood function generation for successive soft-decision Turbo decoding based on real-time hardware implementation. We further show that the extremely high-speed realtime packet transmission of greater than 1 Gbps in a 100-MHz channel bandwidth (i.e., 10 bits/second/Hz) is achieved at the average received signal energy per bit-to-background noise power spectrum density ratio (Eb/N0) per receiver antenna of approximately 12 dB using 16QAM modulation and Turbo coding with the coding rate of 8/9 in 4-by-4 OFDM multiplexing.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.eurasip.org/Proceedings/Ext/IST05/papers/545.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article