NDLI: A New Downlink Control Channel Scheme for LTE

Content Provider	IEEE Xplore Digital Library
Author	Yu-chun Wu Yong-Ping Zhang Shulan Feng Zhang, P.
Copyright Year	2013
Description	Author affiliation: Res. Dept., Hisilicon Technol., Beijing, China (Yu-chun Wu; Yong-Ping Zhang; Shulan Feng; Zhang, P.)
Abstract	To accommodate the realistic channel conditions better and thus improve the system throughput, 3GPP introduced the Physical Downlink Control Channel (PDCCH) in LTE. A downlink control information (DCI) message is generated and transmitted over the PDCCH. The User Equipment (UE) is required to perform blind decoding as it is not aware of the detailed control structure. However, blind decoding consumes a lot of UE's computational power, e.g. UE needs to do nearly 240 convolutional decodings on the dedicated search space (DSS) within about 0.15ms in the case of aggregation of 5 carriers. This is a big challenge for UE implementation in reality. In this paper, we propose a new downlink control channel scheme which can greatly reduce the PDCCH blind decoding complexity (from 240 to about 15 convolutional decodings) and power consumption. Another important benefit of this new scheme is that the DCI design can be much more flexible by the DCI index. Also, the new scheme can reduce the false alarm of PDCCH blind decoding and thus decrease the false uplink transmission and interference.
Sponsorship	IEEE Vehicular Technol. Soc.
Starting Page	1
Ending Page	6
File Size	683209
Page Count	6
File Format	PDF
ISBN	9781467363372
ISSN	15502252
DOI	10.1109/VTCSpring.2013.6691830
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-02
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decoding Handheld computers Decision support systems Indexes Cascading style sheets Convolutional codes Complexity theory
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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