UNIVERSITAS BINA DARMA, UNIVERSITAS BINA DARMA (2022) Performance measurements of IEEE 802.11n WLAN Technology using MIMO-STBC 4x4 with Antenna Correlation and Ray Tracing Channel Model. Performance measurements of IEEE 802.11n WLAN Technology using MIMO-STBC 4x4 with Antenna Correlation and Ray Tracing Channel Model.
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Abstract
Indoor channel with high correlated fading degraded the performance of telecommunication system such as IEEE 802.11n WLAN (Wireless LAN) System. We proposed a method for preserving SER (Symbol Error Rate) of the IEEE 802.11n standard in MIMO-OFDM (Multiple-Input Multiple�Output-Orthogonal Frequency Division Multiplexing) correlated channel as a performance parameter. In order to improve its reliability without complexity, it used STBC (Space Time Block Coding) using Alamouti algorithm. This algorithm could be implemented with STBC 2x1, 2x2, 3x1, 3x2, 3x3, 4x1, 4x2, 4x3, and 4x4 using BPSK, QPSK, 16-QAM, and 64- QAM modulation. Impulse respons of indoor channel, then so-called LTE�UBD channel, could be modeled by using a ray tracing method. The channel gave delay spread and rms delay of 71.94 ns and 1.5 ns respectively. The ergodic channel capacity declined steadily as the channel correlation became worse. This problem also caused a decrease in SNR (Signal-to-Noise Ratio) performance to achieve the SER of 10-3 with various modulations. Fortunately, this did not have significant influence on WLAN system that used the STBC with four antennas in each of the transmitter and receiver.
| Item Type: | Article |
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| Subjects: | T Technology > T Technology (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Electronics and Computer Science |
| Depositing User: | Mr Edi Surya Negara |
| Date Deposited: | 23 Jun 2022 01:54 |
| Last Modified: | 23 Jun 2022 01:54 |
| URI: | http://eprints.binadarma.ac.id/id/eprint/14376 |
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