© The Institution of Engineering and Technology
In this study, the physical layer (PHY) of the upcoming vehicular communication standard IEEE 802.11p has been simulated in vehicle-to-vehicle situation through two different scenarios. IEEE 802.11p wireless access in vehicular environment defines modifications to IEEE 802.11 to support intelligent transportation systems applications. The standard is being considered as a promising wireless technology for enhancing transportation safety and provides safety-related services like collision avoidance and emergency breaking. At first, this includes data exchange between high-speed vehicles and between the vehicles and the roadside infrastructure in the licensed ITS band of 5.9 GHz. Performance analysis of PHY model has been evaluated into different propagation conditions (AWGN, Ricean and Rayleigh fading). In particular, bit error rate (BER) and signal to noise ratio for all the data rates have been estimated. Simulation results reveal that our system can efficiently mitigate inter-symbol interference and inter-carrier interference introduced by multi-path delay spread in our high mobility environment but against frequency-selective fading BER values are on to increase. To overcome this problem, the authors propose to use a different value of guard interval (3.2 µs). Our initial results indicate that the performance with the larger cyclic prefix outperforms the performance of the initial value in our mobile channel profiles. Moreover, the authors investigated in which way the Doppler spread affects the performance with regard to the transmission distance.
References
-
-
1)
-
Yi, W., Akram, A., Bhaskar, K., Konstantinos, P.: `IEEE 802.11p performance evaluation and protocol enhancement', Proc. 2008 IEEE Int. Conf. Vehicular Electronics and Safety, 22–24 September 2008.
-
2)
-
http://www.mathworks.com/matlabcentral/fileexchange/3540, Martin Clark, MATLAB Central model: IEEE 802.11a WLAN PHY, The MathWorks.
-
3)
-
Jijun, Y., Tamer, E., Gavin, Y.: `Performance evaluation of safety applications over dsrc vehicular ', VANET'04, Information Sciences Laboratory, General Motors Corporation, 1 October 2004, Philadelphia, PA, USA.
-
4)
-
Z.F. Luis
.
OFDM PHY Layer implementation based on the 802.11a standard and system performance analysis.
-
5)
-
Official IEEE 802.11 working group project timelines, accessed on 15 July 2007.
-
6)
-
Broady, C.: `WAVE background information – wireless access in vehicular environments for the 5.9 GHz band', ARINC, January 2004.
-
7)
-
Tevfic, Y.: `Self-interference handling in OFDM based wireless communication systems', , Master of Science in Electrical Engineering, Department of Electrical Engineering, College of Engineering, University of South Florida.
-
8)
-
IEEE Std 802.11a: ‘Wireless LAN medium access control (MAC) and physical layer (PHY) specifications: high-speed physical layer in the 5 GHz band’, December 1999.
-
9)
-
ASTM E2213-03: ‘Standard specification for telecommunications and information exchange between roadside and vehicle systems — 5 GHz Band dedicated short range communications (DSRC) medium access control (MAC) and physical layer (PHY) specifications’.
-
10)
-
A.U. Roberto ,
A.-M. Gulielmo
.
Wave: a tutorial.
IEEE Commun. Mag.
,
126 -
133
-
11)
-
Yunpeng, Z., Lothar, S., Georgios, O., Shumin, G., Hans-Juergen, R.: `An error model for inter-vehicle communications in highway scenarios at 5.9 GHz', ComNets, RWTH-Aachen University, Philips Research Laboratories Aachen Int. Workshop on Modeling Analysis and Simulation of Wireless and Mobile Systems, Proc. Second ACM Int. Workshop on Perf. Evaluation of Wireless Ad Hoc, Sensor, and Ubiquitous Networks, 2005.
-
12)
-
Sibecas, S., Corral, C.A., Emami, S., Stratis, G., Rasor, G.: `Pseudo-pilot OFDM scheme for 802.11a and R/A in DSRC applications', IEEE 58th Vehicular Technology Conf., VTC 2003, 2003.
-
13)
-
Jared, D., Minko, T., Mike, F., Babak, D.: `COTS-based DSRC testbed for rapid algorithm development, implementation, and test', Int. Conf. on Mobile Computing and Networking, Proc. First Int. Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization, 2006.
-
14)
-
Matlab and Simulink, http://www.mathworks.com/products/simulink/.
-
15)
-
www.rfdesign.com, 802.11 b/a, JOHN HANSEN, ‘A physical medium comparison’.
-
16)
-
IEEE 802.11p/D3.0: ‘Draft amendment to standard for information technology – telecommunications and information exchange between systems – local and metropolitan area networks specific requirements – Part 11: wireless LAN medium access control (MAC) and physical layer specifications – Amendment 7: wireless access in vehicular environment’, 2007.
-
17)
-
Stephan, E.: `Performance evaluation of the IEEE 802.11p WAVE communication standard', Vehicular Technology Conf., 2007, VTC-2007, Institute of Communication Networks, Technische Universität München, October 2007, IEEE 66th volume, 30 September 2007–3.
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-its.2008.0070
Related content
content/journals/10.1049/iet-its.2008.0070
pub_keyword,iet_inspecKeyword,pub_concept
6
6