Estimation of Symmetric Channels for Discrete Cosine Transform Type-I Multicarrier Systems: A Compressed Sensing Approach

<div>Symmetries in <svg height="5.69755pt" id="M136" style="vertical-align:-0.04980993pt" version="1.1" viewbox="-0.0498162 -5.64774 6.54572 5.69755" width="6.54572pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M494 0V32C450 38 426 53 393 105L296 260C330 305 354 338 375 361C411 396 421 401 476 410V442H293V410C332 402 337 394 323 371C311 351 295 324 274 293L227 371C213 393 218 402 252 410V442H16V410C70 402 80 391 108 344L196 199C166 159 140 123 115 95C81 54 61 43 7 32V0H196V32C156 41 150 53 167 81C182 105 199 138 219 166L269 79C287 49 283 38 245 32V0H494Z" id="g13-118"></path><glyph.data ascent="1024" descent="-360" horiz-adv-x="482" vert-adv-y="482"></glyph.data></g></svg> and <svg height="9.25986pt" id="M137" style="vertical-align:-0.04981041pt" version="1.1" viewbox="-0.0498162 -9.21005 7.27645 9.25986" width="7.27645pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M531 0V32C480 40 474 41 474 105V288C474 398 423 454 336 454C286 454 237 424 203 390V703C143 688 72 674 19 667V637C71 631 75 632 75 571V105C75 41 69 38 12 32V0H249V32C207 38 203 46 203 101V352C225 373 251 380 275 380C314 380 347 354 347 277V101C347 46 344 39 296 32V0H531Z" id="g13-102"></path><glyph.data ascent="1024" descent="-360" horiz-adv-x="550" vert-adv-y="550"></glyph.data></g></svg> to be used in DCT1-based systems <svg height="11.5564pt" id="M138" style="vertical-align:-2.26807pt" version="1.1" viewbox="-0.0498162 -9.28833 79.4489 11.5564" width="79.4489pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M300 -147C201 -63 143 98 143 270S200 602 300 686L282 710C136 610 70 450 70 271V270C70 89 136 -72 282 -170L300 -147Z" id="g113-41"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="346" 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89 275 270Z" id="g113-42"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="346" vert-adv-y="346"></glyph.data></g></svg> [<a href="/journals/tswj/2015/151370/#B14">14</a>].</div>

The Scientific World Journal

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Figure 2

Figure 2: Estimation of Symmetric Channels for Discrete Cosine Transform Type-I Multicarrier Systems: A Compressed Sensing Approach 