TALK  |  Resource Block Embedding: Towards High Throughput Broadband Multimedia Wireless Networks

Date released: Jun 2, 2011


  •  TALK   Resource Block Embedding: Towards High Throughput Broadband Multimedia Wireless Networks
  • Date & Time:

    Thursday, June 2, 2011; 12:00 PM

  • 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.

  • Speaker:

    Ramesh Annavajjala
    MERL

  • MERL Host:

    Philip Orlik

  • Research Area:

    Electronics & Communications