CAJ | 학술논문

针对传统选择映射算法需要额外传输边带信息的不足，提出一种预留子载波-选择映射联合算法：通过对正交频分复用OFDM信号的子载波进行分组，将0幅度预留子载波嵌入到各分组的特定位置后对分组进行位移，由此把边带信息嵌入到预留子载波的位置上，最后选择峰均功率比PA-PR最优的一路传输。仿真结果表明，该算法不仅不需要额外传输边带信息，同时有效地降低了OFDM系统的PAPR和复杂度，提高了系统频带利用率。
침대전통선택영사산법수요액외전수변대신식적불족，제출일충예류자재파-선택영사연합산법：통과대정교빈분복용OFDM신호적자재파진행분조，장0폭도예류자재파감입도각분조적특정위치후대분조진행위이，유차파변대신식감입도예류자재파적위치상，최후선택봉균공솔비PA-PR최우적일로전수。방진결과표명，해산법불부불수요액외전수변대신식，동시유효지강저료OFDM계통적PAPR화복잡도，제고료계통빈대이용솔。
Aiming at the problem that the tradition selective mapping (SLM)algorithm needs transmit side information,a new algorithm-reserved subcarriers-SLMalgorithm was proposed,which used the technology of grouping for the subcarriers of orthogonal frequency division multiplexing (OFDM)signals.Meanwhile, it inserted side information into the location of reserved subcarriers after shifting the groups by rows,then select the lowest PAPR groups to send.The simulation results showed that the proposed algorithm didn’t need transmit side information,at same time the peak-to-average power ratio(PAPR)and complexity of the system could be effectively reduced,the bandwidth utilization was improved.