NDLI: Tradeoff between channel estimation accuracy and application throughput for in-home MIMO power line communication

Content Provider	IEEE Xplore Digital Library
Author	Nayagam, A. Katar, S. Rende, D. Afkhamie, K. Yonge, L.
Copyright Year	2011
Description	Author affiliation: Atheros Communications, 203 Silver Springs Blvd, Ocala, FL 34470, USA (Nayagam, A.; Katar, S.; Rende, D.; Afkhamie, K.; Yonge, L.)
Abstract	In this paper we consider two alternate packet structures for estimating the multi-input multi-output (MIMO) powerline channel and their impact on achievable application throughputs. In the first packet structure, an orthogonal pair of OFDM symbols is used to estimate the channel. When compared to single-input single-output (SISO) transmissions that use one OFDM symbol to estimate the channel, there is an additional overhead of one OFDM symbol in this approach. This additional overhead will reduce the throughput improvements offered by MIMO. In the second packet structure, a single OFDM symbol is used to estimate the MIMO channel and interference between the two transmit streams is avoided by using alternate carriers for each stream. The composite MIMO channel is then obtained by interpolating the estimated response across the missing carriers in each stream. The interpolation may introduce an estimation error in the channel estimate that could degrade the achievable signal-to-noise ratios on each stream and thereby degrade the physical layer (PHY) data rate. However, when compared to the first packet structure the overhead is reduced by one OFDM symbol. This will result in a more efficient transmission that could overcome the loss in PHY data rate. This tradeoff between overhead for channel estimation accuracy and application throughput is studied in this paper using power line channel and noise data that were measured in the field. It is demonstrated that although a higher PHY rate can be achieved when an orthogonal pair of symbols is used to estimate the channel, this approach has a lower TCP and UDP rate when compared to the packet structure that uses only one symbol and interpolation to estimate the channel.
Starting Page	411
Ending Page	417
File Size	503585
Page Count	7
File Format	PDF
ISBN	9781424477517
e-ISBN	9781424477500
e-ISBN	9781424477494
DOI	10.1109/ISPLC.2011.5764432
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-03
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel estimation MIMO OFDM Throughput Payloads Interpolation Array signal processing MIMO Throughput power line communication in-home MIMO power line channels MIMO channel estimation
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

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