基于符号对称性的半符号OFDM调制方法
기우부호대칭성적반부호OFDM조제방법
Half Symbol OFDM Modulation Based on Symbol Symmetry
  • 万方数据
    电子科技大学学报 전자과기대학학보
    JOURNAL OF UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
    2014年 5期 647-652 ,共6页

    康家方%王红星%钟佩琳%刘传辉%刘锡国

    강가방%왕홍성%종패림%류전휘%류석국

    频谱效率%傅里叶变换%半符号%正交频分复用 頻譜效率%傅裏葉變換%半符號%正交頻分複用
    빈보효솔%부리협변환%반부호%정교빈분복용
    bandwidth efficiency%Fourier transform%half symbol%OFDM
    在分析OFDM调制符号对称性的基础上，结合正交上下变频技术，提出了一种基于符号对称性的半符号OFDM (HS-OFDM)调制方法，分析了系统的误码性能和频谱效率，给出了一种抗多径干扰的调制符号设计方法，并对理论分析进行了仿真验证。该半符号调制方法适用于子载波采用BPSK或PAM调制的OFDM系统，可将系统的频谱效率极限值提高至2 Baud/Hz，为更高效调制技术的研究提供了一个突破口。
    재분석OFDM조제부호대칭성적기출상，결합정교상하변빈기술，제출료일충기우부호대칭성적반부호OFDM (HS-OFDM)조제방법，분석료계통적오마성능화빈보효솔，급출료일충항다경간우적조제부호설계방법，병대이론분석진행료방진험증。해반부호조제방법괄용우자재파채용BPSK혹PAM조제적OFDM계통，가장계통적빈보효솔겁한치제고지2 Baud/Hz，위경고효조제기술적연구제공료일개돌파구。
    Based on the analysis of symbol symmetry of orthogonal frequency-division multiplexing (OFDM) modulation and by combining with quadrature up(down)-conversion technique, a half symbol OFDM (HS-OFDM) modulation method based on symbol symmetry is proposed. The BER performance, the spectral efficiency, and the transmission over multipath fading channels are analyzed. By using this method to an OFDM system modulated by binary phase shife keying (BPSK) or pulse amplitude modulation (PAM), the upper limit of the system bandwidth efficiency can be raised to 2 Baud/Hz.
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