NDLI: A Novel Layered Space-Time-Frequency Architecture with Convolutional Coding

Content Provider	IEEE Xplore Digital Library
Author	Yuanliang Huang Jiangzhou Wang Higuchi, K.
Copyright Year	2007
Description	Author affiliation: Dept. of Electron., Kent Univ. (Yuanliang Huang; Jiangzhou Wang)
Abstract	For orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) multiplexing in high speed wireless transmission under broadband fading channel, a novel coded layered space-time-frequency (LSTF) architecture is proposed, which can achieve the available spatial, temporal and frequency diversity, and make the system implementation easy for high data rate transmission. In this novel architecture, each independently coded layer is threaded in the three-dimensional space-time-frequency transmission resource array. Channel estimation based on a time-multiplexed pilot channel is employed. The convolutional code is used as the constituent code, and the iterative receiver structure consisting of a linear minimum-mean-square-error soft-interference- cancellation (LMMSE-SIC) detector and the soft-input soft-output (SISO) maximum a posteriori (MAP) decoders is adopted. Simulation results show that the proposed LSTF architecture can considerably outperform the LSTF (i.e., LSTF-b) in which each independently coded layer is associated with a permanently assigned antenna,, and get almost the same performance as the LSTF (i.e., LSTF-a) where coding is applied across the whole information stream. Since its structure consists of multiple parallel lower-speed encoders/decoders with shorter codeword length, the proposed LSTF architecture can be much more easily implemented than the LSTF-a. Moreover, four iterations for joint detection and decoders are sufficient, and the percentage of the pilot channel energy in one packet should be in the range of [16%, 24%] to provide near optimum performance.
Starting Page	1816
Ending Page	1820
File Size	290158
Page Count	5
File Format	PDF
ISBN	1424402662
ISSN	15502252
DOI	10.1109/VETECS.2007.377
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-22
Publisher Place	Ireland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Convolutional codes MIMO Frequency diversity Iterative decoding Receiving antennas Detectors OFDM modulation Transmitting antennas Space technology Fading
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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