Layanan journal yang disediakan oleh Perpustakaan Universitas Gunadarma
| Judul Artikel | : | A COMPARATIVE STUDY OF CHANNEL ESTIMATION BASED ON SYMBOL SOURCE OF PILOT FOR DOWNLINK OFDMA SYSTEM ON IEEE 802.16e STANDARD |
|---|---|---|
| Judul Terbitan | : | Jurnal Penelitian dan Pengembangan Telekomunikasi |
| ISSN | : | 1410-7066 |
| Bahasa | : | IND |
| Tempat Terbit | : | Bandung |
| Tahun | : | 0000 |
| Volume | : | Vol. 14 Issue 1 0000 |
| Penerbit | : | STT TELKOM |
| Frekuensi Penerbitan | : | 2x per Tahun |
| Penulis | : | Savitri Galihl , Riafeni Karlina', Fifin Nugroho", Trio Adiono", and Adit Kurniawan'' |
| Abstraksi | : | Mobile WiMAX system is expected to be a base for wireless ubiquitous products aU over the world. This high mobility communication systems need efficient channel estimation to cope high frequency selectivity and time variation channel effect. In this paper, two channel estimation methods based on symbol source of pilot for downlink OFDMA IEEE 802.16e standard (Mobile WiMAX) are compared and investigated. We compare preamble-symbol-based channel estimation and data-symbol-based channel estimation. Based on our simulation, it is proven that the data symbol based channel estimation method have better performance than preamble-based channel estimation method. We also try two interpolation scheme for data symbol based channel estimation. First is two dimensional MMSE (Minimum Mean Square Error)/Linear Interpolation scheme. Linear Interpolation was carried out at time domain and MMSE Interpolation was performed at frequency domain. The other is Linear Interpolation in both domain. It is shown that the MMSE interpolation at frequency domain achieve best performance at higly dispersive channel (ITU-B vehicular). We conclude symbol data based channel estimation with MMSE/Linear Interpolation is efficient and suitable scheme for the downlink OFDMA mobile WiMAX system. The performance of all methodes are shown by measuring bit error rate with 64 QAM and QPSK modulation in ITU A and ITU B vehicular channel models. |
| Kata Kunci | : | estimasi kanal; OFDMA; 802.16e; mobile WiMAX |
| Lokasi | : | P60 |
| Terakreditasi | : | belum |