Abstract
The development of wireless communication technology require technology (software and hardware) that can keep up with changing standards. SDR platform is a software-based wireless technology that can keep up with technological developments without changing hardware. WARP is one of SDR platforms developed by American Rice University. This research to determine the performance of the SDR with the QAM technique. The performance system can be seen from BER for different distance between transmitter and receiver and different level QAM. The research was carried in two enviroment (indoor and outdoor) with LOS propagation. The results show that the value of BER 4-QAM in the two enviroment is the smallest than another levels. The value of BER 4-QAM at indoor is 0.0023 and outdoors is 0 for a distance of 6 meters, so the performance of outdoor is better than indoor. SDR performance can be improved using QAM techniques.
Highlights
The development of wireless communication technology require technology that can keep up with changing standards
The results show that the value of Bit Error Rate (BER) 4-QAM in the two enviroment is the smallest than another levels
Teknik modulasi 4-QAM/QAM memiliki hasil Bit Error Rate (BER) yang paling baik dibandingkan 8-QAM dan 16-QAM untuk semua variasi jarak, terlihat pada Gambar 5
Summary
The development of wireless communication technology require technology (software and hardware) that can keep up with changing standards. Penelitian ini menggunakan modulasi PSK dan memberikan kesimpulan bahwa komunikasi multihop lebih baik dari komunikasi SISO berdasarkan nilai BER yang didapat dengan memvariasikan daya pancar [17]. Penelitian ini menggunakan modulasi QPSK dan mengukur BER dengan memvariasikan daya pancar untuk dua variasi jarak.[21] Teknik pemilihan relay dan skema network coding telah diterapkan pada modul WARP. Penelitian yang telah dilakukan menggunakan teknik modulasi PSK untuk penerapan WARP, dimana PSK hanya memperhatikan pergeseran phase.
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