Path: Top -> Journal -> Telkomnika -> 2013 -> Vol 11, No 2: June
Performance of Channel Estimation in MIMO-OFDM Systems
Performance of Channel Estimation in MIMO-OFDM Systems
Journal from gdlhub / 2016-11-07 09:13:21Oleh : Subuh Pramono, Eddy Triyono, Telkomnika
Dibuat : 2013-06-01, dengan 1 file
Keyword : block-comb type, LS, MIMO-OFDM, MMSE
Url : http://journal.uad.ac.id/index.php/TELKOMNIKA/article/view/937
Paper ini mensimulasikan kinerja metode estimasi kanal fading pada orthogonal frequency division multiplexing-multiple input multiple output (OFDM-MIMO), least squares (LS) dan minimum mean squared error (MMSE). Channel impul response (CIR) kanal fading dibutuhkan untuk mengatasi
intersymbol interference (ISI). Informasi channel impul response didapat dari estimasi kanal. Iterasi simulasi menggunakan teknik monte-carlo untuk menghasilkan kinerja bit error rate (BER) dan mean squared error (MSE). Hasil simulasi menunjukkan bahwa mean squared error pada sistem MIMO lebih baik dibanding sistem SISO. Dengan estimasi kanal MMSE, sistem MIMO 2Tx-2Rx memberikan perbaikan ±2 dB dibanding sistem SISO untuk nilai MSE 10-2.Selanjutnya, Sistem MIMO 3Tx-2Rx menghasilkan perbaikan 1.5 dB dan MIMO 4Tx-2Rx menghasilkan 3.5 dB. Pada sistem MIMO 2Tx-Rx, teknik estimasi kanal MMSE menghasilkan kinerja lebih baik ±1 dB dibanding teknik estimasi kanal LS untuk untuk MSE
10-2 dengan nilai signal to noise ratio (SNR) yang cukup besar. Penyusunan pilot, block type-pilot menghasilkan kinerja lebih baik dibanding comb type-pilot untuk kondisi kanal fading cepat. Block typepilot memperbaiki sistem ±10 dB dibanding comb type-pilot dengan teknik MMSE untuk nilai BER 2 10-2.
This paper presented the performance of faded channel estimation method on orthogonal frequency division multiplexing-multiple input multiple outputs (OFDM-MIMO) i.e. least squares (LS) and minimum mean squared error (MMSE). Channel impuls response (CIR) was required to overcome the intersymbol interference (ISI). Channel impuls response information was obtained from channel estimation
processing. Iterance simulation used monte-carlo technique to determine the performance of bit error rate (BER) and mean squared error (MSE). Simulation results show that the mean squared error performance on MIMO system was better than the SISO system. On MMSE channel estimation, the MIMO 2Tx-2Rx system provided ± 2 dB improvement that compared to SISO system at value of MSE 10-2. Furthermore,MIMO 3Tx-2Rx produce improvement about 1.5 dB, MIMO 4Tx-2Rx improve about 3.5 dB at BER 10-4,respectively.The MIMO 2Tx-2Rx system, MMSE channel estimation produced better performance ± 1 dB than LS channel estimation with sufficient SNR value for MSE 10-2 .Pilot arrangement, the simulation results show that the block type-pilot arrangement produced better performance than the comb type-pilot arrangement at fast fading channel. Block type-pilot arrangement system produced better ± 10 dB than the comb type-pilot arrangement with MMSE method at value of BER 2 10-2.
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| Properti | Nilai Properti |
|---|---|
| ID Publisher | gdlhub |
| Organisasi | Telkomnika |
| Nama Kontak | Herti Yani, S.Kom |
| Alamat | Jln. Jenderal Sudirman |
| Kota | Jambi |
| Daerah | Jambi |
| Negara | Indonesia |
| Telepon | 0741-35095 |
| Fax | 0741-35093 |
| E-mail Administrator | elibrarystikom@gmail.com |
| E-mail CKO | elibrarystikom@gmail.com |
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