NDLI: On LTE coding scheme inefficiency & potential improvement

Content Provider	IEEE Xplore Digital Library
Author	Hu, Jinsong Zou, Jun Yang, Wenjie Hua, Min Zhang, Jingjing Wang, Linjiao
Copyright Year	2014
Description	Author affiliation: Wireless Networking and Mobile Communications Group, Nanjing University of Science and Technology, China (Hu, Jinsong; Zou, Jun; Yang, Wenjie; Hua, Min; Zhang, Jingjing; Wang, Linjiao)
Abstract	Coding and decoding schemes are critical to the performance in wireless communication system. In Current coding scheme of LTE system, each transport block (TB) is segmented into several code blocks (CBs) which can be coded and decoded individually. If one of the CBs in a TB fails in decoding, the whole TB is required to be retransmitted. Channel estimation is very crucial for the correctness of the decoding. In LTE, the demodulation reference signal (DM-RS) used for channel estimation, are unevenly arranged in resource block pair (RBP). We first show how the arrangement of DM-RS can impair channel estimation of some CBs, which ultimately results in the inefficiency of the coding scheme. To solve the problem, we propose a design by commandeering the decoded data with higher accuracy channel estimation as reference signals to help to estimate the channel of the part which lacks of DM-RS. The performance is evaluated via simulations.
Starting Page	141
Ending Page	145
File Size	476195
Page Count	5
File Format	PDF
ISBN	9789860334074
ISSN	18825621
DOI	10.1109/WPMC.2014.7014806
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-07
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	National Institute of Information and Communicatio
Subject Keyword	Wireless communication Resource block OFDM Reference signal Coding Channel estimation Encoding Decoding Multimedia communication Long Term Evolution
Content Type	Text
Resource Type	Article

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