{"product_id":"lte-advanced-physical-layer-improvements-von-vincenzo-malta","title":"LTE Advanced - Physical Layer Improvements","description":"\u003cp\u003eOrthogonal Frequency Division Modulation (OFDM) is the modulation employed by the LTE downlink physical layer. Recent studies on pilot-aided channel estimation, show that assuming a parametric channel model can effectively improve the estimate accuracy. The algorithms based on this model perform the frequency response estimation of a multipath environment through the knowledge of the tap-delay parameters. This work focuses on the estimation of the number of delays, required by the tap-delay estimators. For this purpose the state-of-the-art detection scheme is investigated over a static and a dynamic channel. Furthermore, it is compared with an approach based on a simple threshold operation. It¿s shown that over the static channel, MDL exhibits a certain robustness against the time observation reduction, while the Threshold algorithm suffers from a signi¿cant increase in the estimate¿s error. Tests over the dynamic channel show a general performances decrement. However MDL average error doesn¿t drastically get worse as the Threshold one. The state-of-the-art performances then, are not exceeded, but the noticed problems still leave this topic open.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783844307931\"\u003e\u003ch3\u003eEstimation of the Number of Multipath Components in a Delay-Dispersive Environment for LTE OFDM Downlink\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783844307931","offer_id":39470004207709,"sku":"9783844307931","price":49.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/3b26bc99-644b-4772-8b43-a0a53b5618b7.jpg?v=1773297107","url":"https:\/\/shop.autorenwelt.de\/products\/lte-advanced-physical-layer-improvements-von-vincenzo-malta","provider":"Autorenwelt Shop","version":"1.0","type":"link"}