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DS1225Y-200+
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DS1225Y-200+ 产品设计参考 - Maxim Integrated

  • 制造商:
    Maxim Integrated
  • 分类:
    存储,芯片,内存,存储器
  • 封装
    EDIP-28
  • 描述:
    Non-Volatile SRAM Module, 8KX8, 200ns, CMOS, 0.72INCH, ROHS COMPLIANT, DIP-28
  • 页面指南:
更新时间: 2025-05-06 04:13:19 (UTC+8)

DS1225Y-200+ 产品设计参考

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Rec. ITU-R M.1225 1
RECOMMENDATION ITU-R M.1225
GUIDELINES FOR EVALUATION OF RADIO TRANSMISSION
TECHNOLOGIES FOR IMT-2000
(Question ITU-R 39/8)
(1997)
Rec. ITU-R M.1225
CONTENTS
Page
1 Introduction.................................................................................................................................................... 2
2 Scope.............................................................................................................................................................. 2
3 Structure of the Recommendation.................................................................................................................. 3
4 Related documents ......................................................................................................................................... 3
5 Radio transmission technology considerations .............................................................................................. 4
5.1 Radio transmission technologies functional blocks.......................................................................... 6
5.1.1 Multiple access technology............................................................................................... 6
5.1.2 Modulation technology..................................................................................................... 6
5.1.3 Channel coding and interleaving....................................................................................... 6
5.1.4 Duplexing technology.......................................................................................................6
5.1.5 Physical channel structure and multiplexing..................................................................... 6
5.1.6 Frame structure ................................................................................................................. 7
5.1.7 RF channel parameters......................................................................................................7
5.2 Other functional blocks..................................................................................................................... 7
5.2.1 Source coder ..................................................................................................................... 7
5.2.2 Interworking...................................................................................................................... 7
6 Technical characteristics chosen for evaluation............................................................................................. 7
6.1 Criteria for evaluation of radio transmission technologies............................................................... 7
6.1.1 Spectrum efficiency .......................................................................................................... 8
6.1.2 Technology complexity – Effect on cost of installation and operation............................. 8
6.1.3 Quality .............................................................................................................................. 8
6.1.4 Flexibility of radio technologies ....................................................................................... 8
6.1.5 Implication on network interface...................................................................................... 8
6.1.6 Handportable performance optimization capability.......................................................... 9
6.1.7 Coverage/power efficiency............................................................................................... 9
7 Selected test environments for evaluation...................................................................................................... 9
8 Guidelines for evaluating the radio transmission technologies by independent evaluation groups............... 9
9 Evaluation methodology ................................................................................................................................ 11
9.1 Objective criteria .............................................................................................................................. 12
9.2 Subjective criteria............................................................................................................................. 12
9.3 Evaluation spreadsheet ..................................................................................................................... 12
9.4 Summary evaluations........................................................................................................................ 13
9.4.1 Methodology for summary criteria evaluations................................................................ 13
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