摘要
针对跳频通信系统,提出一种非相干的,高频带利用率的调制方案。该方案是以多进制ASK和正交频分复用(OFDM)相结合。这个方案能使所需的数据带宽最小。对固定的扩频带宽来说,用户使用的频率通道数量大大增加。针对附加了高斯白噪声的FH-OFDM-MASK系统提出了简单而又精确的误比特率表达式。
A noncoherent, bandwidth-efficient modulation scheme is proposed for frequency-hopping communication system. The proposed scheme is a combination of noncoherent M-ary amplitude-shift keying （NMASK） and orthogonal frequency-division multiplexing （OFDM）. The using of this scheme will minimize the required data bandwidth. The number of frequency slots available to the users will be increased significantly for the fixed spread-spectrum bandwidth （BWSS）. The simple and accurate bit error rate expressions have been derived for FH-OFDM-MASK in additive white Gaussian noise channels.
出处
《山西电子技术》
2006年第6期7-8,11,共3页
Shanxi Electronic Technology
关键词
FH
MASK
非相干
OFDM
frequency hopping
M-ary amplitude-shift keying
noncoherent
orthogonal frequency-divlsion multiplexing
