CAJ | 학술논문

研究基于多带-正交频分复用(MB-OFDM)超宽带系统中的双载波调制解调技术.在分析双载波(DCM)调制特点的基础上,针对超宽带系统频率选择性信道的特点,提出了利用频域分集信息的双载波解调算法,进一步提高系统性能.仿真结果表明系统在速率为480 Mb/s的IEEE CM1信道下,要达到小于8%的误包率性能,只需信噪比为8.5 dB,比现有文献水平提高了1.5 dB的增益.在算法的实现中摒弃了传统信号检测LLR算法中的对数运算,易于低功耗低成本的硬件实现.
연구기우다대-정교빈분복용(MB-OFDM)초관대계통중적쌍재파조제해조기술.재분석쌍재파(DCM)조제특점적기출상,침대초관대계통빈솔선택성신도적특점,제출료이용빈역분집신식적쌍재파해조산법,진일보제고계통성능.방진결과표명계통재속솔위480 Mb/s적IEEE CM1신도하,요체도소우8%적오포솔성능,지수신조비위8.5 dB,비현유문헌수평제고료1.5 dB적증익.재산법적실현중병기료전통신호검측LLR산법중적대수운산,역우저공모저성본적경건실현.
This paper focuses on the Dual-Carrier Modulation(DCM) technology in the Ultra Wide Band(UWB) wireless communication system.A new demodulation algorithm-getting fully usage of frequency diversity in the UWB channel is proposed.System simulator result shows that the proposed method can get 1.5 dB gain at the Per(Packet error) performance of 8% while the data rate is 480 Mb/s under IEEE CM1 channel.What's more,the method can be implemented by a much fewer complexity hardware architecture,for it avoids LLR calculation in the traditional method.