NDLI: A novel CQI-assisted sounding design for TDD LTE-Advanced system

Content Provider	IEEE Xplore Digital Library
Author	Baolong Zhou Lingge Jiang He Chen Shengjie Zhao
Copyright Year	2012
Description	Author affiliation: Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, P. R. China (Baolong Zhou; Lingge Jiang; He Chen) \|\| China Product R&D, Alcatel-Lucent Shanghai Bell, Shanghai, P.R. China (Shengjie Zhao)
Abstract	In the long term evolution (LTE) time division duplex (TDD) systems, base stations use uplink sounding reference signals (SRSs) to estimate downlink channel state information (CSI) for downlink beamforming transmissions. Because SRSs sent by up to 8 users are multiplexed on the same time-frequency resources, there exist mutual interferences among these SRSs over fading channels. Thus this scheme inevitably impacts the estimation accuracy of CSI and thereby degrades the beamforming performance. In this paper, we propose a novel sounding scheme to improve the quality of CSI, in which according to the CQIs (channel quality indications) periodically reported by each user and the bandwidth requirement of each user, BS dynamically schedules each user to send SRSs only on the requisite bandwidth with best CQIs instead of on full bandwidth or specified sub-bandwidth as in the current LTE TDD systems. Simulations show that the proposed scheme obtains much better estimation accuracy than the current scheme for various frequency-selective and/or time-selective fading channels, and is robust to frequency selective channels. Therefore the proposed scheme is applicable to the uplink SRS design in LTE-Advanced and other MIMO-OFDM TDD systems.
Starting Page	4904
Ending Page	4908
File Size	172124
Page Count	5
File Format	PDF
ISBN	9781457720529
ISSN	15503607
e-ISBN	9781457720536
e-ISBN	9781457720512
DOI	10.1109/ICC.2012.6364280
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-10
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delay Channel estimation Time domain analysis Frequency domain analysis Array signal processing Bandwidth time division duplex (TDD) channel estimation error Long Term Evolution (LTE) sounding
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

Sounding reference signal design for TDD LTE-Advanced system

A Frequency-Domain Sounding Scheme for LTE TDD Beamforming Systems

Performance and optimization of interference coordination in downlink TDD-LTE systems

SNR estimation based on sounding reference signal in LTE uplink

Performance evolution of downlink mimo in LTE technology

Improved SRS design and channel estimation for LTE-advanced uplink

Compressed Sensing-Based Channel Estimation Methods for LTE-Advanced Multi-User Downlink MIMO System

DMRS Design and Channel Estimation for LTE-Advanced MIMO Uplink

Analysis of synchronization error tracking processor for lte in time-varying channels.

A novel CQI-assisted sounding design for TDD LTE-Advanced system

Similar Documents

Sounding reference signal design for TDD LTE-Advanced system

A Frequency-Domain Sounding Scheme for LTE TDD Beamforming Systems

Performance and optimization of interference coordination in downlink TDD-LTE systems

SNR estimation based on sounding reference signal in LTE uplink

Performance evolution of downlink mimo in LTE technology

Improved SRS design and channel estimation for LTE-advanced uplink

Compressed Sensing-Based Channel Estimation Methods for LTE-Advanced Multi-User Downlink MIMO System

DMRS Design and Channel Estimation for LTE-Advanced MIMO Uplink

Analysis of synchronization error tracking processor for lte in time-varying channels.

A novel CQI-assisted sounding design for TDD LTE-Advanced system