信阳农业高等专科学校学报
信暘農業高等專科學校學報
신양농업고등전과학교학보
JOURNAL OF XINYANG AGRICULTURAL COLLEGE
2011年
3期
126-128
,共3页
瑞利衰落信道%认知无线电%PSM%多小波包
瑞利衰落信道%認知無線電%PSM%多小波包
서리쇠락신도%인지무선전%PSM%다소파포
Rayleigh fading channel%cognitive radio%PSM%multiwavelet packet
提出一种用于瑞利衰落信道的认知无线电脉冲波形调制（PSM）方案。该方案采用多小波包滤波器组来构造正交脉冲,允许时域和频域的重叠,具有较高的灵活性和频带利用率,并可利用频率分集来提高抗衰落性能。仿真结果表明,基于多小波包的PSM方案不仅符合FCC模板的要求,而且具有比单小波方案更高的抗衰落性能。
提齣一種用于瑞利衰落信道的認知無線電脈遲波形調製（PSM）方案。該方案採用多小波包濾波器組來構造正交脈遲,允許時域和頻域的重疊,具有較高的靈活性和頻帶利用率,併可利用頻率分集來提高抗衰落性能。倣真結果錶明,基于多小波包的PSM方案不僅符閤FCC模闆的要求,而且具有比單小波方案更高的抗衰落性能。
제출일충용우서리쇠락신도적인지무선전맥충파형조제（PSM）방안。해방안채용다소파포려파기조래구조정교맥충,윤허시역화빈역적중첩,구유교고적령활성화빈대이용솔,병가이용빈솔분집래제고항쇠락성능。방진결과표명,기우다소파포적PSM방안불부부합FCC모판적요구,이차구유비단소파방안경고적항쇠락성능。
This paper presents a pulse shaping modulation（PSM） scheme for cognitive radio under Rayleigh fading channel.An architecture of multiwavelet packet filter bank is used to produce orthogonal pulse,which can be overlapped both in time and frequency region.The system has high flexibility and effective spectrum utilization due to its multiplicity,and frequency diversity can be used to improve its anti-fading ability.The simulation results indicate that the PSM scheme using multiwavelet packet meets the power spectral mask of the Federal Communications Commission（FCC） and is more resistant to fading than the one with single wavelet.
