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Devdutt Marathe

dblp:79/3206 · DBLP profile ↗
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1ranked-venue papers
0as first author
0since 2021 · last 2009
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Computer networks · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer networks
1 paper
Physical-layer communications · 100%
Theoretical computer science
1 paper
Information theory · 100%

Topics — the 5 heaviest of 5, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Physical-layer communications
channel state information
0.112009
Outage probability of multiple-input single-output (MISO) systems with delayed feedback · IEEE Trans. Commun. 2009
Physical-layer communications › channel state information
feedback delay
0.112009
Outage probability of multiple-input single-output (MISO) systems with delayed feedback · IEEE Trans. Commun. 2009
Physical-layer communications
MIMO
0.112009
Outage probability of multiple-input single-output (MISO) systems with delayed feedback · IEEE Trans. Commun. 2009
Physical-layer communications › multiple-antenna systems
MISO systems
0.112009
Outage probability of multiple-input single-output (MISO) systems with delayed feedback · IEEE Trans. Commun. 2009
Information theory › channel capacity
outage probability
0.012009
Outage probability of multiple-input single-output (MISO) systems with delayed feedback · IEEE Trans. Commun. 2009

Methods — techniques the papers use, named apart from their topics

spatial power allocation · 0.2outage probability analysis · 0.2beamforming · 0.2
YearPublicationVenuePosition
2009 Outage probability of multiple-input single-output (MISO) systems with delayed feedback
abstract
We investigate the effect of feedback delay on the outage probability of multiple-input single-output (MISO) fading channels. Channel state information at the transmitter (CSIT) is a delayed version of the channel state information available at the receiver (CSIR). We consider two cases of CSIR: (a) perfect CSIR and (b) CSI estimated at the receiver using training symbols. With perfect CSIR, under a short-term power constraint, we determine: (a) the outage probability for beamforming with imperfect CSIT (BF-IC) analytically, and (b) the optimal spatial power allocation (OSPA) scheme that minimizes outage numerically. Results show that, for delayed CSIT, BF-IC is close to optimal for low SNR and uniform spatial power allocation (USPA) is close to optimal at high SNR. Similarly, under a longterm power constraint, we show that BF-IC is better for low SNR and USPA is better at high SNR. With imperfect CSIR, we obtain an upper bound on the outage probability with USPA and BF-IC. Results show that the loss in performance due to imperfection in CSIR is not significant, if the training power is chosen appropriately.
V. Sreekanth Annapureddy, Devdutt Marathe, T. R. Ramya, Srikrishna Bhashyam
IEEE Trans. Commun.2