Paper Info
Title
Multiple LDPC-Encoder Layered Space-Time-Frequency Architectures for OFDM MIMO Multiplexing
Abstract
This paper is focused on the study of layered space-time-frequency (LSTF) architectures with channel coding for orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) multiplexing systems for high speed wireless communications over a frequency-selective fading channel. In order to achieve the available spatial, temporal and frequency diversities, and also make the system implementation feasible for high speed OFDM MIMO multiplexing, a novel LSTF architecture with multiple channel encoders is proposed with each independently coded layer being threaded in the three-dimensional space-time-frequency transmission resource array. Non-iterative receiver is adopted which consists of list sphere detector and irregular low-density parity-check codes as the constituent codes. Simulation results show that the performance of the proposed multiple-encoder LSTF architecture is very close to that of the conventional single-encoder LSTF where coding is applied across the whole information stream. However, due to the use of multiple parallel encoders/decoders with a shorter codeword length, the proposed LSTF architecture has much lower hardware processing speed and complexity than the conventional LSTF.
Year
DOI
Venue
2012
10.1007/s11277-010-0179-1
Wireless Personal Communications
Keywords
Field
DocType
OFDM,MIMO multiplexing,Threaded layered space-time-frequency architecture,List sphere detection,Irregular-LDPC code,Imperfect channel estimation
MIMO-OFDM,Computer science,Fading,Low-density parity-check code,Communication channel,MIMO,Real-time computing,Encoder,Multiplexing,Orthogonal frequency-division multiplexing
Journal
Volume
Issue
ISSN
63
4
0929-6212
Citations 
PageRank 
References 
0
0.34
21
Authors
2
Name
Order
Citations
PageRank
Yuanliang Huang1314.51
Jiangzhou Wang22674212.44