基于小波變換的ofdm系統(tǒng)現(xiàn)代通信技術(shù)講座論文(已修改)
2025-07-05 05:49 本頁(yè)面
【正文】 《現(xiàn)代通信技術(shù)講座論文》題目： 基于小波變換的OFDM系統(tǒng) 9摘 要 近年來(lái)，無(wú)線(xiàn)通信在人們的生活中占據(jù)著越來(lái)越重要的地位，因此，人們對(duì)無(wú)線(xiàn)通信傳輸速率提出了更高的期望，正交頻分復(fù)用技術(shù)即OFDM(OrthogonalFrequencyDivisionMultiplexing)因其具有較強(qiáng)的的抗衰落能力以及抗碼間干擾ISI(IntersymbolInterference)能力，頻帶利用率高等優(yōu)點(diǎn)，開(kāi)始受到學(xué)者們的關(guān)注。但是也有頻偏敏感、頻譜利用率不夠高等問(wèn)題。所以提出了基于小波理論的OFDM系統(tǒng)，不僅提高了抗干擾能力，而且降低了系統(tǒng)的復(fù)雜度。 故為了使人們對(duì)于基于小波的OFDM技術(shù)有一個(gè)概括性的認(rèn)識(shí)，全面的了解。本文簡(jiǎn)單介紹一下小波的基本概念并對(duì)OFDM進(jìn)行概括性的闡述，并對(duì)基于小波變換的OFDM技術(shù)的應(yīng)用發(fā)展前景進(jìn)行介紹。關(guān)鍵詞：小波，小波變換，OFDMAbstractIn recent years, wireless munication in people39。s lives occupy an increasingly important position, so people put forward for wireless munication transmission rate higher expectations, namely Orthogonal Frequency Division Multiplexing OFDM (OrthogonalFrequencyDivisionMultiplexing) because it has over the strong antiantifading capability and intersymbol interference ISI (IntersymbolInterference) capability, bandwidth efficiency advantages, scholars began to receive attention. But there are also offset sensitive to the problem of higher spectral efficiency is not enough. So OFDM system is proposed based on wavelet theory, not only improve the antij
醫(yī)療健康相關(guān)推薦
鄂ICP備17016276號(hào)-1