- Date & Time: Thursday, June 2, 2011; 12:00 PM
Speaker: Ramesh Annavajjala, MERL
MERL Host: Philip V. Orlik Abstract - For orthogonal frequency-division multiplexing (OFDM) based wireless systems, a resource block (RB) in a two-dimensional time-frequency plane is defined as a data block spanned by a number of consecutive OFDM symbols over a number of consecutive subcarriers. Traditionally, RBs contain modulation symbols for data transmission and pilot symbols for channel estimation.
In this talk, I present a novel approach to RB designs for OFDM systems with multiple antennas at the transmitter and the receiver (i.e., MIMO-OFDM). The proposed approach, termed resource block embedding, does not require explicit pilot symbols to estimate the channel at the receiver, and hence reduces the channel estimation overhead significantly. I describe, in detail, the encoding and decoding algorithms for our proposed embedded resource blocks (ERB) for single-user single-antenna transmission, two transmitter antenna Alamouti code, four transmitter antenna stacked Alamouti code, and multi-stream spatial multiplexing. I also outline construction of ERBs for multi-user MIMO systems.
This is a joint work with Phil Orlik and Jin Zhang.
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- Date: Sunday, May 1, 2011
MERL Contact: Anthony Vetro Brief - Anthony Vetro is Guest Editor for the Special Issue on Distributed Image Processing and Communications of the IEEE Signal Processing Magazine.
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- Date: Friday, April 1, 2011
MERL Contact: Anthony Vetro Brief - Anthony Vetro is Guest Editor for the Special Issue on 3D Media & Displays of the Proceedings of the IEEE.
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- Date: Monday, October 4, 2010 - Wednesday, October 6, 2010
Location: St Malo, France
MERL Contact: Anthony Vetro Brief - MERL is a sponsor for the 2010 edition of the IEEE Multimedia Signal Processing Workshop.
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- Date: Sunday, August 29, 2010 - Wednesday, September 1, 2010
Location: Boston, MA Brief - MERL is a sponsor for the 2010 edition of the IEEE International Conference on Advanced Video and Signal-Based Surveillance. AVSS is a forum bringing together participants from the worlds of research, industry and government agencies sharing interest in various forms of surveillance.
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- Date & Time: Sunday, September 21, 2008; 10:00 AM - 5:00 PM
Location: Brisbane, Australia Brief - MERL is a sponsor for SAPA 2008, the third ISCA Tutorial and Research Workshop on Statistical And Perceptual Audition, to be held in Brisbane, Australia, in September 2008. The workshop is co-organized by MERL researcher Bhiksha Raj.
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- Date & Time: Saturday, September 16, 2006; 9:00 AM - 6:00 PM
Location: Pittsburgh, PA Brief - MERL is a sponsor for SAPA 2006, the second ISCA Tutorial and Research Workshop on Statistical And Perceptual Audition, to be held in Pittsburgh, PA, in September 2006. The workshop is co-organized by MERL researchers Bhiksha Raj and Paris Smaragdis.
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- Date: Tuesday, July 12, 2005 - Friday, July 15, 2005
Location: Beijing, China
MERL Contact: Anthony Vetro Brief - Anthony Vetro is the Special Session Co-Chair of VCIP 2005, the IEEE Visual Communications and Image Processing Conference.
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- Date & Time: Sunday, October 3, 2004; 9:00 AM - 6:00 PM
Location: Jeju, Korea Brief - MERL is a sponsor for SAPA 2004, the first ISCA Tutorial and Research Workshop on Statistical and Perceptual Audio Processing, to be held in Jeju, Korea, in October 2004. The workshop is co-organized by MERL researchers Bhiksha Raj and Paris Smaragdis.
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