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3GPP TS 25.223
Spreading and modulation (TDD)
Contents
Foreword4
1Scope5
2References5
3Symbols and abbreviations5
3.1Symbols5
3.2Abbreviations5
4General6
5Data modulation6
5.1Symbol rate6
5.2Mapping of bits onto signal point constellation6
5.2.1Mapping for burst type 1 and 26
5.2.2Mapping for burst type 37
6Spreading modulation7
6.1Basic spreading parameters7
6.2Channelisation codes7
6.3Channelisation Code Specific Multiplier8
6.4Scrambling codes9
6.5Spread signal of data symbols and data blocks9
6.6Modulation10
6.6.1Combination of physical channels in uplink10
6.6.2Combination of physical channels in downlink11
7Synchronisation codes12
7.1Code Generation12
7.2Code Allocation13
7.2.1Code allocation for Case 114
7.2.2Code allocation for Case 214
7.3Evaluation of synchronisation codes15
Annex A (normative): Scrambling Codes16
Annex B (informative): Generalised Hierarchical Golay Sequences19
B.1Alternative generation19
Annex C (informative): Change history20