NDLI: Reliable feedback generation in unsynchronized joint-processing CoMP transmission networks

Content Provider	IEEE Xplore Digital Library
Author	Iwelski, S. Majeed, E. Zijian Bai Bruck, G.H. Jung, P.
Copyright Year	2015
Description	Author affiliation: Dept. of Commun. Technol., Univ. of Duisburg-Essen, Duisburg, Germany (Iwelski, S.; Majeed, E.; Zijian Bai; Bruck, G.H.; Jung, P.)
Abstract	Coordinated multipoint (CoMP) transmission is a key technique in 4G long term evolution (LTE) systems to provide the ubiquitous broadband communication with cell edge free experience at the user equipment (UE). However, as the transmit signals will reach the UE at several and varying delays, practical CoMP networks might experience large timing offsets (TOs), imposing a significant performance loss. In this paper we focus on implicit feedback generation for practical CoMP joint processing (JP)-joint transmission (JT) networks suffering from TOs. We show that conventional implicit feedback schemes prohibit the expected gain in the downlink, getting outperformed by open-loop transmission schemes and call the benefits of channel state information (CSI) feedback for CoMP JP-JT networks into question. Analytically we prove that the mapping of CSI-reference signal (RS) on different subcarriers imposes multiple phase offsets on the covariance matrix, leading to improper precoding vector selection, while imbalanced TOs among the transmitters limit coherent signal demodulation at the UE. With numerical results we show that estimating and compensating the phase offsets reliable precoding vector selection and phase feedback for coherent signal demodulation can be obtained and as a result considerable improvements for practical CoMP JP-JT networks can be achieved in presence of varying TOs.
Starting Page	921
Ending Page	926
File Size	184382
Page Count	6
File Format	PDF
e-ISBN	9781467367820
DOI	10.1109/PIMRC.2015.7343429
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-30
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Synchronization Demodulation Reliability Interference Ports (Computers) Land mobile radio Timing Offset Coordinated Multipoint Transmission LTE-Advanced Unsynchronized Networks
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Reliable implicit feedback generation in unsynchronized CoMP transmission

On the performance of CoMP transmission in unsynchronized networks with timing offset

Feedback Generation for CoMP Transmission in Unsynchronized Networks with Timing Offset

Performance evaluation of joint processing coordinated multipoint transmission in LTE networks

Coordinated beamforming in downlink CoMP transmission system

Performance Evaluation with Improved Receiver Design for Asynchronous Coordinated Multipoint Transmissions

Coordinated multipoint trials in the downlink (2009)

Shared segmented upload in mobile networks using coordinated multipoint

Power imbalance induced BER performance loss under limited-feedback CoMP techniques

Reliable feedback generation in unsynchronized joint-processing CoMP transmission networks

Similar Documents

Reliable implicit feedback generation in unsynchronized CoMP transmission

On the performance of CoMP transmission in unsynchronized networks with timing offset

Feedback Generation for CoMP Transmission in Unsynchronized Networks with Timing Offset

Performance evaluation of joint processing coordinated multipoint transmission in LTE networks

Coordinated beamforming in downlink CoMP transmission system

Performance Evaluation with Improved Receiver Design for Asynchronous Coordinated Multipoint Transmissions

Coordinated multipoint trials in the downlink (2009)

Shared segmented upload in mobile networks using coordinated multipoint

Power imbalance induced BER performance loss under limited-feedback CoMP techniques

Reliable feedback generation in unsynchronized joint-processing CoMP transmission networks