Pengurangan bit error pada modulasi m-qam dalam kanal rayleigh fading dengan teknik spatial multiplexing dan metode zf-sic, mmse-sic, maximum likelihood = Bit error reduction on m-qam modulation in rayleigh fading channels with spatial multiplexing techniques and zf-sic, mmse-sic, maximum likelihood methods
| Format: | Masters Bachelors |
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| Terbitan: |
Fakultas Teknik Universitas Indonesia
, 2010
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Daftar Isi:
- [Sinyal yang diterima dari kanal komunikasi dengan modulasi M-QAM dapat berubah karena munculnya sejumlah bit yang salah (error). Penyebab terjadinya bit error dapat berupa interferensi, seperti Rayleigh Fading serta noise, seperti Additive White Gaussian Noise (AWGN). Pengurangan bit error pada modulasi M-QAM dapat dilakukan dengan teknik Spatial Multiplexing di sisi pengirim dan metode pendeteksian dan penerimaan sinyal di sisi penerima. Terdapat beberapa penelitian yang dilakukan sebelumnya mengenai penerapan Spatial Multiplexing di sisi pengirim dan metode pendeteksian dan penerimaan sinyal di sisi penerima, seperti penelitian pada komunikasi CDMA dengan metode OSIC, ZF dan Maximum Likelihood. Selain itu, terdapat penelitian tentang MMSE dan penelitian mengenai penerapan metode ZF-SIC pada modulasi BPSK. Permasalahan yang kemudian dihadapi dan menjadi pokok bahasan dalam penulisan tesis ini adalah bagaimana memaksimalkan pengurangan bit error hingga 10-4 atau mendekati 0 agar sinyal yang diterima dapat diterjemahkan (decoding) kembali dengan benar. Untuk itu, dalam tesis ini, diusulkan penggunaan teknik Spatial Multiplexing dengan metode pembatalan atau penekanan terus menerus sinyal interferensi yang terdapat pada sinyal yang diterima, yang diistilahkan dengan Succesisive Interference Cancellation (SIC) pada metode ZF, MMSE dan Maximum Likelihood serta lebih dimaksimalkan dengan menambahkan metode pemilihan sinyal gangguan terberat MRC. Penelitian dalam tesis ini meliputi penambahan data maksimum (M), pada 4-QAM, 8-QAM, 16-QAM, 32-QAM, dan 64-QAM, serta peningkatan Eb/No., Signals received from the channel of communication with M-QAM modulation may change due to the number of bit errors. The cause of bit errors can be interference, such as Rayleigh fading and noise, such as Additive White Gaussian Noise (AWGN). Reduction of bit error on M-QAM modulation can be performed with Spatial Multiplexing techniques on the sender and the method of detection and reception of signals at the receiver side. There are several previous studies conducted regarding the implementation of Spatial Multiplexing in the sender and the method of detection and reception of signals at the receiver side, such as research on CDMA communication with OSIC, ZF and Maximum Likelihood method. In addition, there is research on the MMSE and research on the application of the ZF-SIC in BPSK modulation. The problem that then faced and became the subject of this thesis is how to maximize the reduction in bit errors up to 10-4 or close to 0 for a received signal can be decoding it correctly. Therefore, in this thesis, the proposed use of Spatial Multiplexing technique with the method of interference signals cancellation or suppression continuous contained in the received signal, which is called Succesisive Interference Cancellation (SIC) on the method of ZF, MMSE and Maximum Likelihood and further maximized by adding weighting branch signal selection method which is called MRC. Research in this thesis includes the addition of data maximum (M), on 4-QAM, 8-QAM, 16-QAM, 32-QAM, and 64-QAM, and increasing Eb/No.]