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Sairamesh Nammi

from Austin, TX
Age ~47
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Also known as:
Sai Nammi, Nammi Sairamesh
Connected to:
Lawrence J Namminga, 74Sindy R Namnakani, 41Jeffrey Namnum, 50Kerri NamocRiadh C Namouchi, 59Gene I Namovicz, 95Nathan Namphengsone, 29Ngao Nampito, 44Aisha Namuli, 38Joy B Namulondo, 55

Sairamesh Nammi Phones & Addresses

  • Austin, TX
  • Bedminster, NJ
  • Richardson, TX
  • Las Cruces, NM
  • Dallas, TX

Work

Company: At&t labs, inc. Jul 2016 to Jun 2019 Position: Principal member of technical staff

Education

School / High School: New Mexico State University 2003 to 2007 Specialities: Communications

Skills

Lte • 3Gpp • Wireless • 4G • Mimo • Umts • Telecommunications • Hspa • Ofdm • Simulations • Wcdma • Wireless Technologies • Hsdpa • Gsm • Cdma • 3G • Wimax • Ran • Rf Engineering • Antennas • Universal Mobile Telecommunications System • Evdo • Rf • Mobile Communications • Cdma2000 • Heterogeneous Networks • Cellular Communications • Code Division Multiple Access Method • Orthogonal Frequency Division Multiplexing • Gprs • Wideband Code Division Multiple Access • Radio Frequency

Industries

Wireless

Resumes

Resumes

Sairamesh Nammi Photo 1

Expert - Radio Architecture

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Location:
7285 west 132Nd St, Overland Park, KS 66213
Industry:
Wireless
Work:
At&T Labs, Inc. Jul 2016 - Jun 2019
Principal Member of Technical Staff
Ericsson Jul 2016 - Jun 2019
Expert - Radio Architecture
Huawei Technologies Dec 1, 2015 - Jun 2016
Senior Staff Radio Algorithms Researcher
Ericsson May 2014 - Dec 2015
3Gpp Lte Concept Development
Ericsson Jan 2011 - May 2014
3Gpp Ran-1 Delegate and Concept Development
Education:
New Mexico State University 2003 - 2007
Technische Universität Ilmenau 2004 - 2005
Indian Institute of Technology, Madras 1998 - 2000
Masters, Master of Technology, Communication New Mexico State University
Doctorates, Doctor of Philosophy, Computer Engineering
Skills:
Lte
3Gpp
Wireless
4G
Mimo
Umts
Telecommunications
Hspa
Ofdm
Simulations
Wcdma
Wireless Technologies
Hsdpa
Gsm
Cdma
3G
Wimax
Ran
Rf Engineering
Antennas
Universal Mobile Telecommunications System
Evdo
Rf
Mobile Communications
Cdma2000
Heterogeneous Networks
Cellular Communications
Code Division Multiple Access Method
Orthogonal Frequency Division Multiplexing
Gprs
Wideband Code Division Multiple Access
Radio Frequency

Publications

Us Patents

Multi-User Interference Cancellation In A Single-Carrier Radio Receiver

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US Patent:
8295331, Oct 23, 2012
Filed:
Aug 6, 2010
Appl. No.:
12/851659
Inventors:
Sairamesh Nammi - Dallas TX, US
Narendra Tilwani - Addison TX, US
Assignee:
Telefonaktiebolaget LM Ericsson (publ) - Stockholm
International Classification:
H04B 7/10
H04B 1/707
US Classification:
375148, 375347
Abstract:
A method, apparatus, and radio receiver system for canceling multi-user interference in a single-carrier radio communication system. A front-end receiver such as a RAKE receiver receives a radio signal formatted in a sequence of frames, and outputs a plurality of user signals. An ordering unit determines for a current frame, an order in which to decode and remove the interference contributions of the plurality of user signals. The order may be based on a list of user signals sorted in the order of descending signal-to-interference-plus-noise ratio (SINR), modified by the success or failure of attempts to decode each user signal. A frame calculator determines a coherence time, which is used to calculate the number of subsequent frames in which the user signals are decoded in the determined order.

User Location Based Switching Between Diversity And Multiplexing

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US Patent:
8320967, Nov 27, 2012
Filed:
Dec 14, 2010
Appl. No.:
12/967967
Inventors:
Sairamesh Nammi - Dallas TX, US
Narendra Tilwani - Addison TX, US
Venkata Alapati - Frisco TX, US
Assignee:
Telefonaktiebolaget LM Ericsson (publ) - Stockholm
International Classification:
H04B 1/38
US Classification:
455561, 455436, 455450, 455451, 4554561, 370328, 370329, 370331, 370341
Abstract:
Multiple antennas at the transmitter and receiver increase the capacity in a wireless communication system. Received signal quality can be enhanced through diversity by transmitting the same symbol on multiple antennas. Data rate can be increased through multiplexing by transmitting different symbols on the transmitting antennas. Operating in one particular mode only is generally not suitable. Choosing diversity or multiplexing by taking into account the location of a user can enhance both throughput and reliability.

Method And Apparatus For Spectrally Efficient Link Adaptation Using Harq In Ofdma Systems

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US Patent:
8514957, Aug 20, 2013
Filed:
Apr 28, 2009
Appl. No.:
12/935833
Inventors:
Sairamesh Nammi - Richardson TX, US
Shankar Venkatraman - Dallas TX, US
Ashvin Chheda - Plano TX, US
Assignee:
Apple, Inc. - Cupertino CA
International Classification:
H04K 1/10
US Classification:
375260, 379 9308, 714708
Abstract:
A method to increase spectral efficiency in a communication system is described herein. The communication system includes at least one mobile station and is capable of transmitting messages encoded according to a plurality of available modulation coding schemes (“MCSs”). Each available MCS includes a modulation scheme and an effective coding rate. The MCSs are indexed according to increasing complexity. A signal-to-interference ratio (“SINR”) is determined which is sufficient to satisfy a predetermined frame error rate (“FER”). A first MCS and a corresponding amount of transmissions needed to satisfy the predetermined FER at the SINR using the first MCS are determined. The first MCS has a higher effective coding rate than a second MCS. The second MCS sufficiently satisfies the predetermined FER at the SINR in a single transmission. A message encoded according to the first MCS is transmitted through the communication system using hybrid automatic repeat request (“HARQ”).

Method And Apparatus For Scheduling Users In A Frequency Division Duplex Wireless System With Duty Cycle Limitation

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US Patent:
8588090, Nov 19, 2013
Filed:
Dec 14, 2010
Appl. No.:
12/968029
Inventors:
Sairamesh Nammi - Dallas TX, US
Nishant Batra - Addison TX, US
Assignee:
Telefonaktiebolaget L M Ericsson (publ) - Stockholm
International Classification:
H04L 12/26
H04W 4/00
US Classification:
370252, 370329
Abstract:
A system and method to provide intelligent scheduling of network resources when a user equipment (UE) is operating in a Frequency Division Duplex (FDD) wireless network with duty cycle limitation. Intelligent scheduling is accomplished in two stages—a training stage, and a scheduling stage. In the training stage, a training module in the eNodeB senses the Transmission Time Interval (TTI) pattern when the UE is “awake” (i. e. , when the UE is transmitting power under a P % duty cycle (P

Multi-User Interference Cancellation In A Single-Carrier Radio Receiver

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US Patent:
8634794, Jan 21, 2014
Filed:
Aug 11, 2010
Appl. No.:
12/854633
Inventors:
Sairamesh Nammi - Dallas TX, US
Narendra Tilwani - Addison TX, US
Assignee:
Telefonaktiebolaget L M Ericsson (publ) - Stockholm
International Classification:
H04B 1/10
US Classification:
455296, 455 6713, 455228, 455295, 714755
Abstract:
A method, apparatus, and radio receiver system for canceling multi-user interference in a single-carrier radio communication system. A front-end receiver such as a RAKE receiver receives a radio signal formatted in a sequence of frames, and outputs a plurality of user signals. A processing selector selects on a frame-by-frame basis, either a first signal processing chain that serially decodes and removes the interference contributions of the user signals, or a second signal processing chain that simultaneously decodes and removes the interference contributions of the user signals in parallel. The processing selector may select the first signal processing chain when the number of user signals is greater than or equal to a threshold value, and may select the second signal processing chain when the number of user signals is less than the threshold value.

Including Feedback Information Regarding An Individual Subband Of A Wireless Channel

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US Patent:
20110077040, Mar 31, 2011
Filed:
Jun 25, 2009
Appl. No.:
12/993330
Inventors:
Sairamesh Nammi - Richardson TX, US
Shankar Venkatraman - Dallas TX, US
Gaurav Hemrajani - Dallas TX, US
Ashvin Chheda - Plano TX, US
Lai King Tee - Dallas TX, US
Neng Wang - Plano TX, US
International Classification:
H04B 1/00
H04B 7/00
US Classification:
455507
Abstract:
To report feedback information regarding a wireless channel, a mobile station determines whether a predefined condition is satisfied. In response to determining that the predefined condition is satisfied, feedback information regarding an individual one of plural subbands of the wireless channel is included in a first report to be sent to a base station. In response to determining that the predefined condition is not satisfied, aggregate feedback information regarding the plural subbands is included in a second report to be sent to the base station.

Methods And Apparatus For Controlling Location For Starting Decoding Of Sub-Packets Of A Communication Packet

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US Patent:
20110299442, Dec 8, 2011
Filed:
Dec 6, 2010
Appl. No.:
12/961077
Inventors:
Sairamesh Nammi - Dallas TX, US
Narendra Tilwani - Addison TX, US
International Classification:
H04W 4/00
H04J 3/24
US Classification:
370310, 370474
Abstract:
A communication device includes a decoder that sequentially decodes sub-packets of a first packet that contain redundant traffic information. The decoder identifies a first sequence location where it successfully decoded one of the sub-packets of the first packet to output the traffic information. The decoder then sequentially decodes sub-packets of a second packet starting at a second sequence location that is determined in response to the first sequence location. Related methods, user equipment node, and radio access network nodes are also disclosed.

Using A Variable Timer For Sending An Error Indication

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US Patent:
20120047407, Feb 23, 2012
Filed:
May 4, 2010
Appl. No.:
13/266053
Inventors:
Narendra Tilwani - Addison TX, US
Sairamesh Nammi - Richardson TX, US
Assignee:
NORTEL NETWORKS LIMITED - Mississauga ON
International Classification:
G06F 11/16
US Classification:
714 55, 714E11067
Abstract:
Upon receiving a particular data unit by a receiving layer of a wireless device, it is detected that a previous data unit earlier in sequence to the particular data unit has not yet been received by the receiving layer. A timer is started in response to the detecting, where the timer has a time-out period that is variable dependent upon a parameter associated with receipt of the particular data unit. Upon expiration of the timer based on the timeout period, the receiving layer generates an error indication.
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Sairamesh Nammi from Austin, TX, age ~47 Get Report