Abstract
The increase in capacity demand for vehicular communication is generating interest among researchers. The standard spectra allocated to VANET tend to be saturated and are no longer enough for real-time applications. Millimeter-wave is a potential candidate for VANET applications. However, millimeter-wave is susceptible to pathloss and fading, which degrade system performance. Beamforming, multi-input multi-output (MIMO) and diversity techniques are being employed to minimize throughput, reliability and data rate issues. This paper presents a tractable channel model for VANET in which system performance degradation due to error is addressed by concatenated Alamouti space-time block coding (ASTBC) and Bose–Chaudhuri–Hocquenghem (BCH) coding. Two closed-form approximations of bit error rate (BER), one for BCH in Rayleigh fading and the second for BCH with ASTBC, are derived. These expressions comprise SNR and code rate and can be utilized in designing VANET architectures. The results show that the BER using concatenated ASTBC and BCH outmatches the conventional BER ASTBC expression. The analytical results are compared with numerical results, thereby showing the accuracy of our closed-form expressions. The performance of the proposed expressions is evaluated using different code rates.
Highlights
People die and get injured in traffic accidents all over the world
The vehicular ad-hoc networks (VANETs) is a special class of mobile ad-hoc network (MANET) formed by vehicles equipped with wireless gadgets
The bit error rate (BER) of Alamouti space-time block coding (ASTBC) with BCH coding was minimum in contrast with the BER without BCH coding
Summary
It is mandatory for all vehicles to get information about traffic and road conditions to avoid accidents [1] To cater to this issue, an effective and efficient transport management system is required to minimize road accidents and congestion, as specified in [2]. The demand for communication in VANET with high data rates has dramatically increased in recent years. Due to the high mobility of vehicular nodes and the multipath fading, reliability, throughput and accuracy are the important aspects of VANET millimeter-wave communication. A manipulable architecture is needful which provides us with high reliability and a lower bit error rate. The closed-form approximations of BER for BCH in Rayleigh fading and BCHconcatenated ASTBC coding are derived.
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