On Channel Estimation for 802.11p in Highly Time-Varying Vehicular Channels
Paper in proceeding, 2014

Vehicular wireless channels are highly time-varying and the pilot pattern in the 802.11p orthogonal frequency-division multiplexing frame has been shown to be ill suited for long data packets. The high frame error rate in off-the-shelf chipsets with noniterative receiver configurations is mostly due to the use of outdated channel estimates for equalization. This paper deals with improving the channel estimation in 802.11p systems using a cross layered approach, where known data bits are inserted in the higher layers and a modified receiver makes use of these bits as training data for improved channel estimation. We also describe a noniterative receiver configuration for utilizing the additional training bits and show through simulations that frame error rates close to the case with perfect channel knowledge can be achieved.

Channel Estimation

V2V

802.11p

Cross Layer

V2X

Vehicular communications

Author

Keerthi Nagalapur

Chalmers, Signals and Systems, Communication, Antennas and Optical Networks

Fredrik Brännström

Chalmers, Signals and Systems, Communication, Antennas and Optical Networks

Erik Ström

Chalmers, Signals and Systems, Communication, Antennas and Optical Networks

IEEE International Conference on Communications (ICC), 10-14 June 2014

5659--5664- 6884223
978-147992003-7 (ISBN)

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Communication Systems

DOI

10.1109/ICC.2014.6884223

ISBN

978-147992003-7

More information

Created

10/7/2017