{"product_id":"sub-carrier-adaptive-modulation-and-coding-in-ofdm-von-farinaz-edalat","title":"Sub-carrier Adaptive Modulation and Coding in OFDM","description":"\u003cp\u003eAdaptive Modulation and Coding (AMC) technique  exploits the high frequency diversity in wideband  OFDM channels to obtain higher data rates. While  prior work has discussed the value of AMC from a  theoretical perspective, this work presents the  design and performance of a real-time sub-carrier  AMC system.   The measurements from this AMC  scheme implemented on an OFDM transceiver prototype indicate how this design achieves accurate and consistent Signal-to-Noise estimates, which are critical for the success of AMC. The performance of this design is compared with a uniform-adaptation scheme that assigns the same modulation and coding to all sub-carriers. The experiments over the wireless channel shows that for a target coded BER of 10^-5, this technique achieves average data rates of 308.3 Mbps and 237.1 Mbps across a variety of line-of-sight (LOS) and non-LOS locations respectively, which result in 34% and 40% gain over the best uniform-adaptation scheme. Finally, the  implementation of this AMC incurs a low overhead of 1.1% of the data rate, and a reasonable complexity,  occupying 9.95% of the total transceiver gates on  the Field Programmable Gate Array.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783838352503\"\u003e\u003ch3\u003eReal-time design and performance in wideband wireless system\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783838352503","offer_id":39469160136797,"sku":"9783838352503","price":59.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/775d4a16-dcbb-47e9-9e67-50c3290b9a97.jpg?v=1770701292","url":"https:\/\/shop.autorenwelt.de\/products\/sub-carrier-adaptive-modulation-and-coding-in-ofdm-von-farinaz-edalat","provider":"Autorenwelt Shop","version":"1.0","type":"link"}