NDLI: Robust UE Receiver with Interference Cancellation in LTE Advanced Heterogeneous Network

Content Provider	IEEE Xplore Digital Library
Author	Priyanto, B.E. Kant, S. Rusek, F. Sha Hu Jianjun Chen Wugengshi, C.
Copyright Year	2013
Description	Author affiliation: Lund Res. & Design Center, Huawei Technol. Sweden AB, Lund, Sweden (Priyanto, B.E.; Kant, S.; Rusek, F.; Sha Hu; Jianjun Chen; Wugengshi, C.)
Abstract	Heterogeneous network (HetNet) deployment is a key feature to increase the network capacity in LTE- Advanced and systems beyond. One major obstacle is the interference from neighbor base-stations which can significantly degrade the system performance. In this paper, we present downlink interference mitigation and cancellation algorithms for HetNets in the so-called almost blank subframe (ABS) scenario. In the ABS scenario, one must differentiate between two cases, namely (1) the non- colliding case: the common reference symbols (CRS) of the serving and the dominant interfering cell are not overlapped, and (2) the colliding case: the CRS of the serving cell and the dominant interfering cell are overlapped. For case (1) we propose a robust equalizer and a low-complexity variant of it. For case (2) we present the application of the space alternating generalized expectation-maximization (SAGE) with a maximum a-posteriori (MAP) criterion. Based on extensive realistic link-level simulations, the outcome for case (1) is that the proposed robust equalization technique is almost as good as the receiver with traditional CRS interference cancellation (IC) but with lower complexity and latency. For case (2), we find that the SAGE-MAP with three SAGE cycles/iterations is sufficient to achieve the same performance as the receiver with ideal CRS-IC.
Starting Page	1
Ending Page	7
File Size	295836
Page Count	7
File Format	PDF
ISBN	9781467361873
ISSN	10903038
DOI	10.1109/VTCFall.2013.6692396
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel estimation Interference Robustness Equalizers Transmitting antennas Receiving antennas
Content Type	Text
Resource Type	Article

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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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