公开(公告)号：WO1983003505A1

公开(公告)日：1983-10-13

申请号：PCT/US1983000264

申请日：1983-02-28

Applicant: WESTERN ELECTRIC COMPANY, INC.

Inventor： WESTERN ELECTRIC COMPANY, INC. ,  PRABHU, Vasant, Krishna ,  STEELE, Raymond

IPC: H04B07/26

CPC classification number: H04B1/68 ,  H04B7/2634

Abstract: Frequency-hopped single sideband (SSB) mobile radio system implemented by hopping the carrier frequency of an input signal (s(t)) every tau seconds. The hopping is controlled by a carrier-frequency-hopped sequence (fi(t)) generatd by a carrier-frequency-hopping generator (16, 24). When employed in a frequency-hopped SSB transmitter (10), the carrier sequence functions to modulate the input signal, "hopping" it to a different carrier frequency every tau seconds. The carrier-frequency-hopped SSB receiver employs the identical carrier sequence as used by the transmitter to demodulate the transmitted carrier-frequency-hopped SSB signal, thereby recovering the original single sideband signal (s(t)). By frequency hopping the carrier signal of an SSB signal, the present invention mitigates the effects of co-channel interference and frequency selective fading inherent in prior art SSB cellular mobile radio systems.

Abstract translation: 通过每τ秒跳跃输入信号（s（t））的载波频率而实现的跳频单边带（SSB）移动无线电系统。 跳频由载波跳频发生器（16,24）产生的载频跳频序列（fi（t））控制。 当在跳频SSB发射机（10）中使用时，载波序列用于调制输入信号，每τ秒将其“跳频”到不同的载波频率。 载频跳频SSB接收机采用与发射机相同的载波序列来解调所发送的载频跳频SSB信号，从而恢复原始单边带信号（s（t））。 通过跳频SSB信号的载波信号，本发明减轻了现有技术的SSB蜂窝移动无线电系统中固有的同信道干扰和频率选择性衰落的影响。