IMPROVEMENTS IN OR RELATING TO MOBILE CELLULAR RADIO SYSTEMS
专利汇可以提供IMPROVEMENTS IN OR RELATING TO MOBILE CELLULAR RADIO SYSTEMS专利检索，专利查询，专利分析的服务。并且A frequency hopped cellular mobile radio system, comprising a plurality of base stations each affording a cellular region, or cell, within which communication is facilitated with a plurality of mobile units, each of which mobile units is free to move from cell to cell, the system having in combination the following features: a synchronisation system which serves to bring all mobile units within a cell into synchronisation, as observed from the base station of that cell, whereby orthogonal frequency hopping between mobile units of the cell is facilitated, frequency hopping between mobile units in different cells being non-orthogonal; an affiliation strategy which tends to constrain each mobile unit to maintain communication with a base station selected in dependence upon received signal strength; mobile unit transmission power control in dependence upon received signal/noise ratio at a base station, whereby transmitted mobile power tends towards the minimum necessary for acceptable communication; a frequency hopping strategy, wherein the number of bits per hop is limited to a few bits per hop, the actual number of hops being chosen having regard to performance and overall framing delay constraints; Nyquist filtering of signals effective to constrain interference between hops both in the time domain and in the frequency domain, hopped dwells being arranged to extend in time beyond a nominal bit transmission period (before and after the period) so as to overlap; differential phase shift keying (DPSK) modulation combined with randomised quadrature phase shift keyed (QPSK) modulation to decorrelate interference between cells; and, a system of error control coding.，下面是IMPROVEMENTS IN OR RELATING TO MOBILE CELLULAR RADIO SYSTEMS专利的具体信息内容。
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
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| 一种数据调制方法以及编码器 | 2020-05-08 | 128 |
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| 生成用于表示数据的信号以及确定要表示的数据的方法和装置 | 2020-05-14 | 399 |
| 一种播出数字电视的方法、装置及可读存储介质 | 2020-05-13 | 286 |
| 数据通信及相关产品 | 2020-05-12 | 683 |
| 支持256QAM的接收机中的动态SNR调整 | 2020-05-13 | 812 |
| 发送设备及其交织方法 | 2020-05-11 | 107 |
| 一种基于OFDM的水声通信系统脉冲噪声抑制方法 | 2020-05-13 | 511 |
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