Performance evaluations of channel estimations in IEEE 802.11p environments

To solve the defect in IEEE 802.11p standard that coherence bandwidth is insufficient to estimate the channel state in rich scattering environment, hance a time domain channel estimation technique is proposed in this paper. This technique is based on least-square (LS) algorithm, and assisted by Zadoff-Chu sequence in symbol prefix and preamble. The channel models in the simulation are referencing HIPERLAN/2.

[1]  Ming-Xian Chang,et al.  Detection of OFDM Signals in Fast-Varying Channels With Low-Density Pilot Symbols , 2008, IEEE Transactions on Vehicular Technology.

[2]  Jia-Chin Lin,et al.  Channel Estimation Assisted by Postfixed Pseudo-Noise Sequences Padded with Null Samples for Mobile OFDM Communications , 2008, 2008 IEEE Wireless Communications and Networking Conference.

[3]  M.A. Ingram,et al.  Six time- and frequency- selective empirical channel models for vehicular wireless LANs , 2007, IEEE Vehicular Technology Magazine.

[4]  Celestino A. Corral,et al.  Pseudo-pilot OFDM scheme for 802.11a and R/A in DSRC applications , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).

[5]  Jia-Chin Lin,et al.  LS channel estimation assisted from chirp sequences in OFDM communications , 2009, 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace & Electronic Systems Technology.

[6]  Edgar Bolinth,et al.  Robust channel estimation in wireless LANs for mobile environments , 2002, Proceedings IEEE 56th Vehicular Technology Conference.

[7]  Aidong Men,et al.  ZP-OFDM broadcasting systems with insufficient Guard Interval , 2008, 2008 International Conference on Communications, Circuits and Systems.

[8]  Hyun Seo Oh,et al.  Performance evaluation of V2V/V2I communications: The effect of midamble insertion , 2009, 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace & Electronic Systems Technology.

[9]  Jia-Chin Lin,et al.  Channel estimation assisted by postfixed pseudo-noise sequences padded with zero samples for mobile orthogonal-frequency-division-multiplexing communications , 2009, IET Commun..

[10]  Theodore S. Rappaport,et al.  Wireless communications - principles and practice , 1996 .

[11]  Andreas Meier,et al.  Design of 5.9 ghz dsrc-based vehicular safety communication , 2006, IEEE Wireless Communications.

[12]  Jia-Chin Lin,et al.  Novel Channel Estimation Techniques in IEEE 802.11p Environments , 2010, 2010 IEEE 71st Vehicular Technology Conference.

[13]  Georgios B. Giannakis,et al.  Cyclic prefixing or zero padding for wireless multicarrier transmissions? , 2002, IEEE Trans. Commun..

[14]  C.N. Georghiades,et al.  Zero-padded OFDM with improved performance over multipath channels , 2004, First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004..

[15]  Mérouane Debbah,et al.  A pseudo random postfix OFDM modulator and inherent channel estimation techniques , 2003, GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489).

[16]  Wai-Chi Fang,et al.  A Data Detection Scheme for Single-Carrier Block Transmission Using Sphere Decoding Algorithm , 2010, 2010 IEEE 71st Vehicular Technology Conference.

[17]  P. Schramm,et al.  Structure and performance of the HIPERLAN/2 physical layer , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).

[18]  Jia-Chin Lin.  Least-Squares Channel Estimation for Mobile OFDM Communication on Time-Varying Frequency-Selective Fading Channels , 2008, IEEE Transactions on Vehicular Technology.

[19]  Hyun Seo Oh,et al.  Mid-amble aided OFDM performance analysis in high mobility vehicular channel , 2008, 2008 IEEE Intelligent Vehicles Symposium.

[20]  G. Matz,et al.  Efficient OFDM Channel Estimation in Mobile Environments Based on Irregular Sampling , 2006, 2006 Fortieth Asilomar Conference on Signals, Systems and Computers.