{"product_id":"design-of-channel-estimation-and-equalization-for-ofdm-systems-von-ali-salah-mahdi-ergun-ercelebi","title":"Design of Channel Estimation and Equalization for OFDM Systems","description":"\u003cp\u003eOrthogonal Frequency Division Multiplexing (OFDM) system is one of the multicarrier techniques which is robust against Inter-symbol-Interference, multipath fading and very easy to apply in transmitters by using inverse fast Fourier transform IFFT and at the receivers by using fast Fourier transform FFT. In a communication system, channel estimation is very important issue for the data detection. In coherent detection, one of the popular techniques is to use pilot tones as a reference signal in OFDM symbols. In the comb-type pilot tones insertion, pilot tones are inserted into each OFDM symbols, but inserting a large number of pilot tones will lead to channel capacity reduction or bandwidth expansion [1-2]. In this work, to overcome this transmission loss, a modified least square (ModLS) algorithm for fast time varying wireless channel at comb-type pilot arrangement in QAM signals for OFDM system is proposed. The simulation results obtained from the proposed algorithm showed a good performance in noisy wireless channels. In addition, it has been compared with least square (LS) algorithm in different signal to noise ratios and different channel tabs.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783659671616\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783659671616","offer_id":39449155502173,"sku":"9783659671616","price":39.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/c7c5f5b5-9925-4fc1-911e-f6352cef1a76.jpg?v=1769924035","url":"https:\/\/shop.autorenwelt.de\/products\/design-of-channel-estimation-and-equalization-for-ofdm-systems-von-ali-salah-mahdi-ergun-ercelebi","provider":"Autorenwelt Shop","version":"1.0","type":"link"}