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<div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/622ba5bf15da9b288b189d25/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"> </span> </div><div class="t m0 x2 h4 y3 ff1 fs1 fc0 sc0 ls0 ws0">Single Carrier FDMA (SC-</div><div class="t m0 x3 h4 y4 ff1 fs1 fc0 sc0 ls0 ws0">FDMA)</div><div class="t m0 x4 h5 y5 ff1 fs2 fc0 sc0 ls0 ws0">October 02, 20<span class="_ _1"></span>09</div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>
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<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/622ba5bf15da9b288b189d25/bg2.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"> </span> </div><div class="t m0 x5 h4 y6 ff1 fs1 fc0 sc0 ls0 ws0">Introduction</div><div class="t m0 x1 h6 y7 ff1 fs3 fc0 sc0 ls0 ws0">•</div><div class="t m0 x6 h6 y8 ff1 fs3 fc0 sc0 ls0 ws0">SC-FDM<span class="_ _1"></span>A is a modified form of OFDMA</div><div class="t m0 x1 h6 y9 ff1 fs3 fc0 sc0 ls0 ws0">•</div><div class="t m0 x6 h6 ya ff1 fs3 fc0 sc0 ls0 ws0">Has been selected as the <span class="_ _2"></span>uplink transmiss<span class="_ _2"></span>ion </div><div class="t m0 x6 h6 yb ff1 fs3 fc0 sc0 ls0 ws0">scheme for LTE</div><div class="t m0 x1 h6 yc ff1 fs3 fc0 sc0 ls0 ws0">•</div><div class="t m0 x6 h6 yd ff1 fs3 fc0 sc0 ls0 ws0">Lower Peak-to-Average Power Ratio (PAPR) </div><div class="t m0 x6 h6 ye ff1 fs3 fc0 sc0 ls0 ws0">compared to OFDMA</div><div class="t m0 x1 h6 yf ff1 fs3 fc0 sc0 ls0 ws0">•</div><div class="t m0 x6 h6 y10 ff1 fs3 fc0 sc0 ls0 ws0">As in OFDMA<span class="_ _1"></span>, the t<span class="_ _2"></span>ransmitters in an SC-FDMA </div><div class="t m0 x6 h6 y11 ff1 fs3 fc0 sc0 ls0 ws0">system use diff<span class="_ _2"></span>erent orthogonal frequenci<span class="_ _2"></span>es </div><div class="t m0 x6 h6 y12 ff1 fs3 fc0 sc0 ls0 ws0">(subcarriers) to <span class="_ _2"></span>transmit symbols</div><div class="t m0 x1 h6 y13 ff1 fs3 fc0 sc0 ls0 ws0">•</div><div class="t m0 x6 h6 y14 ff1 fs3 fc0 sc0 ls0 ws0">However, they transmit the <span class="_ _2"></span>symbols </div><div class="t m0 x6 h6 y15 ff1 fs3 fc0 sc0 ls0 ws0">sequentially, rather<span class="_ _2"></span> than in parallel</div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>
<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/622ba5bf15da9b288b189d25/bg3.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"> </span> </div><div class="t m0 x7 h7 y16 ff1 fs4 fc0 sc0 ls0 ws0">Transm<span class="_ _1"></span>itter and Receiver Structure </div><div class="t m0 x8 h7 y17 ff1 fs4 fc0 sc0 ls0 ws0">for OFDMA</div><div class="t m0 x9 h8 y18 ff1 fs5 fc0 sc0 ls0 ws0">Subcarrier </div><div class="t m0 x9 h8 y19 ff1 fs5 fc0 sc0 ls0 ws0">Mapping</div><div class="t m0 xa h8 y18 ff1 fs5 fc0 sc0 ls0 ws0">M Point </div><div class="t m0 xa h8 y19 ff1 fs5 fc0 sc0 ls0 ws0">IDFT</div><div class="t m0 xb h8 y1a ff1 fs5 fc0 sc0 ls0 ws0">DAC/RF</div><div class="t m0 xc h8 y18 ff1 fs5 fc0 sc0 ls0 ws0">Add </div><div class="t m0 xc h8 y19 ff1 fs5 fc0 sc0 ls0 ws0">CP/PS</div><div class="t m0 xd h8 y1b ff1 fs5 fc0 sc0 ls0 ws0">Subcarrie<span class="_ _1"></span>r </div><div class="t m0 xd h8 y1c ff1 fs5 fc0 sc0 ls0 ws0">De-</div><div class="t m0 xd h8 y1d ff1 fs5 fc0 sc0 ls0 ws0">Mappin<span class="_ _1"></span>g </div><div class="t m0 xd h8 y1e ff1 fs5 fc0 sc0 ls0 ws0">/Equalizatio<span class="_ _1"></span>n</div><div class="t m0 xe h8 y1b ff1 fs5 fc0 sc0 ls0 ws0">M Point </div><div class="t m0 xe h8 y1c ff1 fs5 fc0 sc0 ls0 ws0">DFT</div><div class="t m0 xb h8 y1f ff1 fs5 fc0 sc0 ls0 ws0">RF/ADC</div><div class="t m0 xc h8 y1b ff1 fs5 fc0 sc0 ls0 ws0">Remove </div><div class="t m0 xc h8 y1c ff1 fs5 fc0 sc0 ls0 ws0">CP</div><div class="t m0 xf h8 y1f ff1 fs5 fc0 sc0 ls0 ws0">Detector</div></div><div class="c x10 y20 w3 h9"><div class="t m1 x0 ha y21 ff2 fs6 fc0 sc0 ls0 ws0"><span class="_ _3"> </span></div><div class="t m0 x11 hb y22 ff3 fs0 fc0 sc0 ls0 ws0">n</div><div class="t m0 x12 hc y23 ff3 fs7 fc0 sc0 ls0 ws0">x</div></div><div class="c x13 y24 w4 hd"><div class="t m2 x0 he y25 ff2 fs8 fc0 sc0 ls0 ws0"><span class="_ _4"> </span></div><div class="t m0 x14 hb y26 ff3 fs0 fc0 sc0 ls0 ws0">l</div><div class="t m0 x12 hc y27 ff3 fs7 fc0 sc0 ls0 ws0">X</div><div class="t m0 x15 hf y28 ff2 fs7 fc0 sc0 ls0 ws0"></div></div><div class="c x16 y29 w4 h9"><div class="t m1 x0 ha y21 ff2 fs6 fc0 sc0 ls0 ws0"><span class="_ _5"> </span></div><div class="t m0 x11 hb y22 ff3 fs0 fc0 sc0 ls0 ws0">m</div><div class="t m0 x12 hc y23 ff3 fs7 fc0 sc0 ls0 ws0">x</div><div class="t m0 x17 hf y2a ff2 fs7 fc0 sc0 ls0 ws0"></div></div><div class="c x0 y1 w2 h2"><div class="t m0 x18 h8 y2b ff4 fs5 fc0 sc0 ls0 ws0">Transmitter and receiver s<span class="_ _1"></span>tructure of SC-FDMA</div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>
<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/622ba5bf15da9b288b189d25/bg4.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"> </span> </div><div class="t m0 x7 h7 y16 ff1 fs4 fc0 sc0 ls0 ws0">Transm<span class="_ _1"></span>itter and Receiver Structure </div><div class="t m0 x19 h7 y17 ff1 fs4 fc0 sc0 ls0 ws0">for SC-FDM<span class="_ _1"></span>A</div><div class="t m0 x1a h8 y18 ff1 fs5 fc0 sc0 ls0 ws0">N Point </div><div class="t m0 x1a h8 y19 ff1 fs5 fc0 sc0 ls0 ws0">DFT</div><div class="t m0 x9 h8 y18 ff1 fs5 fc0 sc0 ls0 ws0">Subcarrier </div><div class="t m0 x9 h8 y19 ff1 fs5 fc0 sc0 ls0 ws0">Mapping</div><div class="t m0 xa h8 y18 ff1 fs5 fc0 sc0 ls0 ws0">M Point </div><div class="t m0 xa h8 y19 ff1 fs5 fc0 sc0 ls0 ws0">IDFT</div><div class="t m0 xb h8 y1a ff1 fs5 fc0 sc0 ls0 ws0">DAC/RF</div><div class="t m0 xc h8 y18 ff1 fs5 fc0 sc0 ls0 ws0">Add </div><div class="t m0 xc h8 y19 ff1 fs5 fc0 sc0 ls0 ws0">CP/PS</div><div class="t m0 x1a h8 y2c ff1 fs5 fc0 sc0 ls0 ws0">N Point </div><div class="t m0 x1a h8 y2d ff1 fs5 fc0 sc0 ls0 ws0">IDFT</div><div class="t m0 xd h8 y1b ff1 fs5 fc0 sc0 ls0 ws0">Subcarrie<span class="_ _1"></span>r </div><div class="t m0 xd h8 y1c ff1 fs5 fc0 sc0 ls0 ws0">De-</div><div class="t m0 xd h8 y1d ff1 fs5 fc0 sc0 ls0 ws0">Mappin<span class="_ _1"></span>g </div><div class="t m0 xd h8 y1e ff1 fs5 fc0 sc0 ls0 ws0">/Equalizatio<span class="_ _1"></span>n</div><div class="t m0 xe h8 y1b ff1 fs5 fc0 sc0 ls0 ws0">M Point </div><div class="t m0 xe h8 y1c ff1 fs5 fc0 sc0 ls0 ws0">DFT</div><div class="t m0 xb h8 y1f ff1 fs5 fc0 sc0 ls0 ws0">RF/ADC</div><div class="t m0 xc h8 y1b ff1 fs5 fc0 sc0 ls0 ws0">Remove </div><div class="t m0 xc h8 y1c ff1 fs5 fc0 sc0 ls0 ws0">CP</div><div class="t m0 xf h8 y2e ff1 fs5 fc0 sc0 ls0 ws0">Detector</div></div><div class="c x1b y2f w3 h9"><div class="t m1 x0 ha y21 ff2 fs6 fc0 sc0 ls0 ws0"><span class="_ _3"> </span></div><div class="t m0 x11 hb y22 ff3 fs0 fc0 sc0 ls0 ws0">n</div><div class="t m0 x12 hc y23 ff3 fs7 fc0 sc0 ls0 ws0">x</div></div><div class="c x10 y30 w5 h10"><div class="t m3 x0 h11 y21 ff2 fs9 fc0 sc0 ls0 ws0"><span class="_ _6"> </span></div><div class="t m0 x14 hb y31 ff3 fs0 fc0 sc0 ls0 ws0">k</div><div class="t m4 x12 hc y32 ff3 fs7 fc0 sc0 ls0 ws0">X</div></div><div class="c x13 y24 w4 hd"><div class="t m2 x0 he y25 ff2 fs8 fc0 sc0 ls0 ws0"><span class="_ _4"> </span></div><div class="t m0 x14 hb y26 ff3 fs0 fc0 sc0 ls0 ws0">l</div><div class="t m0 x12 hc y27 ff3 fs7 fc0 sc0 ls0 ws0">X</div><div class="t m0 x15 hf y28 ff2 fs7 fc0 sc0 ls0 ws0"></div></div><div class="c x16 y29 w4 h9"><div class="t m1 x0 ha y21 ff2 fs6 fc0 sc0 ls0 ws0"><span class="_ _5"> </span></div><div class="t m0 x11 hb y22 ff3 fs0 fc0 sc0 ls0 ws0">m</div><div class="t m0 x12 hc y23 ff3 fs7 fc0 sc0 ls0 ws0">x</div><div class="t m0 x17 hf y2a ff2 fs7 fc0 sc0 ls0 ws0"></div></div><div class="c x0 y1 w2 h2"><div class="t m0 x18 h8 y2b ff4 fs5 fc0 sc0 ls0 ws0">Transmitter and receiver s<span class="_ _1"></span>tructure of SC-FDMA</div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>
<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/622ba5bf15da9b288b189d25/bg5.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _0"> </span> </div><div class="t m0 x1c h4 y33 ff1 fs1 fc0 sc0 ls0 ws0">LFDMA V.S.<span class="_ _2"></span> IFDMA</div><div class="t m0 x1 h5 y34 ff1 fs2 fc0 sc0 ls0 ws0">•</div><div class="t m0 x6 h5 y35 ff1 fs2 fc0 sc0 ls0 ws0">There are two ap<span class="_ _1"></span>proaches to a<span class="_ _1"></span>pportioni<span class="_ _1"></span>ng </div><div class="t m0 x6 h5 y36 ff1 fs2 fc0 sc0 ls0 ws0">subcarriers among te<span class="_ _1"></span>rminals</div><div class="t m0 x1d h6 y37 ff1 fs3 fc0 sc0 ls0 ws0">–</div><div class="t m0 x1e h6 y38 ff1 fs3 fc0 sc0 ls0 ws0">LFDMA (Localized FDMA<span class="_ _1"></span>)</div><div class="t m0 x1f h12 y39 ff1 fsa fc0 sc0 ls0 ws0">•</div><div class="t m0 x20 h12 y3a ff1 fsa fc0 sc0 ls0 ws0">Each terminal uses a set of adjacen<span class="_ _1"></span>t subcarriers</div><div class="t m0 x1f h12 y3b ff1 fsa fc0 sc0 ls0 ws0">•</div><div class="t m0 x20 h12 y3c ff1 fsa fc0 sc0 ls0 ws0">The bandw<span class="_ _1"></span>idth is confined to a fraction of the system </div><div class="t m0 x20 h12 y3d ff1 fsa fc0 sc0 ls0 ws0">bandwid<span class="_ _1"></span>th</div><div class="t m0 x1d h6 y3e ff1 fs3 fc0 sc0 ls0 ws0">–</div><div class="t m0 x1e h6 y3f ff1 fs3 fc0 sc0 ls0 ws0">Distributed FDMA </div><div class="t m0 x1f h12 y40 ff1 fsa fc0 sc0 ls0 ws0">•</div><div class="t m0 x20 h12 y41 ff1 fsa fc0 sc0 ls0 ws0">Subcarriers used by a terminal sp<span class="_ _1"></span>read over the entire </div><div class="t m0 x20 h12 y42 ff1 fsa fc0 sc0 ls0 ws0">signal ba<span class="_ _1"></span>nd</div><div class="t m0 x1f h12 y43 ff1 fsa fc0 sc0 ls0 ws0">•</div><div class="t m0 x20 h12 y44 ff1 fsa fc0 sc0 ls0 ws0">One special case is Interleave<span class="_ _1"></span>d FDMA (IFDMA)</div><div class="t m0 x1f h12 y45 ff1 fsa fc0 sc0 ls0 ws0">•</div><div class="t m0 x20 h12 y46 ff4 fsa fc0 sc0 ls0 ws0">IFDMA<span class="ff1">: occupied subcarriers are equid<span class="_ _1"></span>istant from </span></div><div class="t m0 x20 h12 y47 ff1 fsa fc0 sc0 ls0 ws0">each other</div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>
