| 摘要 |
FIELD: radio communications; wireless-access, fixed, land mobile and satellite communication systems. ^ SUBSTANCE: newly introduced in prior-art code-division transmitter (IS-95 standard) are following components: orthogonal M-code generator, two (n + k) modulators, and n + k + j + 1 signal spectrum shaper in transmitter circuit; divider, second coder, multiplier, and second character compactor in each data channel; divider, second coder, and multiplier in each call channel; relevant interconnections to organize new signal-code structure and channel code multiplexing type which has made it possible to enhance spectral efficiency of communication system by more than three times. ^ EFFECT: enhanced data-transfer spectral efficiency of promising communication systems. ^ 1 cl, 1 dwg |
