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Characterization of error sequences in UHF digital mobile radio channels

机译:UHF数字移动无线电信道中的错误序列的表征

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摘要

A statistical characterization of transmission errors for digital mobile radio links at 910 MHz in different types of urban areas is presented. Error sequences for messages of 2-s duration at a nominal rate of 20-kb/s for binary-phase-shift-keying (BPSK) demodulated transmissions have been obtained and characterized by Fritchman's channel model, including one error state and two to four error-free states. In the data analyzed, no trend has been observed in the Fritchman parameter as a function of the type of area or of vehicle speed. Typical Fritchman's parameters are established for low and intermediate error rate channels (on the order of 10/sup -3/ and 10/sup -2/ error rates) and for higher error rate channels. Results are also presented for a limited sample of quadrature-phase-shift-keying (QPSK) demodulated 40-kb/s transmissions.
机译:给出了在不同类型的城市地区中910 MHz的数字移动无线链路传输错误的统计特性。已获得用于二进制相移键控(BPSK)解调传输的标称速率为20-kb / s的2秒持续时间消息的错误序列,并通过Fritchman信道模型进行了表征,包括一个错误状态和两个至四个无错误状态。在所分析的数据中,在Fritchman参数中没有观察到作为面积类型或车辆速度的函数的趋势。针对低和中错误率通道(大约10 / sup -3 /和10 / sup -2 /错误率)和较高错误率的通道建立典型的Fritchman参数。还提供了正交相移键控(QPSK)解调的40 kb / s传输的有限样本的结果。

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