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WCDMA3G_AllSSCode


Description: Generate all secondary synchronization codes
Library: 3GPPFDD 10-99, Common Physical Channels
Class: SDFWCDMA3G_AllSSCode

Pin Outputs

Pin

Name

Description

Signal Type

1

SSCode

secondary synchronization code

multiple int

2

SCG

scrambling code group index

multiple int

Notes/Equations
  1. This model is used to generate all secondary synchronization codes (SSC) and their corresponding scrambling code group (SCG) indices.
    Each firing, 256×15 tokens of each SSCode pin and one token of each SCG pin are produced. Each output carries 64 signals.
  2. One secondary synchronization code word, , has an index , and is used in one slot. Each SSC code consists of 15 different secondary synchronization code words that have an index array shown in the following table.

    Let
    b = < 0,0,0,0,0,0,1,1,1,0,1,0,1,0,0,1 >. Z
    =< >.

    The secondary synchronization code words, , , are constructed as the position-wise addition modulo-2 of a Hadamard sequence and the sequence Z. The Hadamard sequences are obtained as the rows of a 256 × 256 Hadamard matrix H8, depending on the chosen code number i. This word code is chosen from every 16th row of the matrix H8 implying 16 possible code words given by row number: i × 16.
    SSC binary code words are converted to real valued sequences by the transformation `0' -> +`1' and `1' -> `−1'.
    One SSC code consists of 15 different secondary synchronization code words and can differ from one cell to another, corresponding to which SCG the cell uses; mapping is shown in the following table. There are 64 possible SSC codes and 64 related SCGs. Each firing, one SSC code and its related SCG are produced on each signal of SSCode and SCG.
    SSC Code Index Array and SCG (index i of code Ci)
    SCG Slot Number
    0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
    1 1 1 2 8 9 10 15 8 10 16 2 7 15 7 16
    2 1 1 5 16 7 3 14 16 3 10 5 12 14 12 10
    3 1 2 1 15 5 5 12 16 6 11 2 16 11 15 12
    4 1 2 3 1 8 6 5 2 5 8 4 4 6 3 7
    5 1 2 16 6 6 11 15 5 12 1 15 12 16 11 2
    6 1 3 4 7 4 1 5 5 3 6 2 8 7 6 8
    7 1 4 11 3 4 10 9 2 11 2 10 12 12 9 3
    8 1 5 6 6 14 9 10 2 13 9 2 5 14 1 13
    9 1 6 10 10 4 11 7 13 16 11 13 6 4 1 16
    10 1 6 13 2 14 2 6 5 5 13 10 9 1 14 10
    11 1 7 8 5 7 2 4 3 8 3 2 6 6 4 5
    12 1 7 10 9 16 7 9 15 1 8 16 8 15 2 2
    13 1 8 12 9 9 4 13 16 5 1 13 5 12 4 8
    14 1 8 14 10 14 1 15 15 8 5 11 4 10 5 4
    15 1 9 2 15 15 16 10 7 8 1 10 8 2 16 9
    16 1 9 15 6 16 2 13 14 10 11 7 4 5 12 3
    17 1 10 9 11 15 7 6 4 16 5 2 12 13 3 14
    18 1 11 14 4 13 2 9 10 12 16 8 5 3 15 6
    19 1 12 12 13 14 7 2 8 14 2 1 13 11 8 11
    20 1 12 15 5 4 14 3 26 7 8 6 2 10 11 13
    21 1 15 4 3 7 6 10 13 12 5 14 16 8 2 11
    22 1 16 3 12 11 9 13 5 8 2 14 7 4 10 15
    23 2 2 5 10 16 11 3 10 11 8 5 13 3 13 8
    24 2 2 12 3 15 5 8 3 5 14 12 9 8 9 14
    25 2 3 6 16 12 16 3 13 13 6 7 9 2 12 7
    26 2 3 8 2 9 15 14 3 14 9 5 5 15 8 12
    27 2 4 7 9 5 4 9 11 2 14 5 14 11 16 16
    28 2 4 13 12 12 7 15 10 5 2 15 5 13 7 4
    29 2 5 9 9 3 12 8 14 15 12 14 5 3 2 15
    30 2 5 11 7 2 11 9 4 16 7 16 9 14 14 4
    31 2 6 2 13 3 3 12 9 7 16 6 9 16 13 12
    32 2 6 9 7 7 16 13 3 12 2 13 12 9 16 6
    33 2 7 12 15 2 12 4 10 13 15 13 4 5 5 10
    34 2 7 14 16 5 9 2 9 16 11 11 5 7 4 14
    35 2 8 5 12 5 2 14 14 8 15 3 9 12 15 9
    36 2 9 13 4 2 13 8 11 6 4 6 8 15 15 11
    37 2 10 3 2 13 16 8 10 8 13 11 11 16 3 5
    38 2 11 15 3 11 6 14 10 15 10 6 7 7 14 3
    39 2 16 4 5 16 14 7 11 4 11 14 9 9 7 5
    40 3 3 4 6 11 12 13 6 12 14 4 5 13 5 14
    41 3 3 6 5 16 9 15 5 9 10 6 4 15 4 10
    42 3 4 5 14 4 6 12 13 5 13 6 11 11 12 14
    43 3 4 9 16 10 4 16 15 3 5 10 5 15 6 6
    44 3 4 16 10 5 10 4 9 9 16 15 6 3 5 15
    45 3 5 12 11 14 5 11 13 3 6 14 6 13 4 4
    46 3 6 4 10 6 5 9 15 4 15 5 16 16 9 10
    47 3 7 8 8 16 11 12 4 15 11 4 7 16 3 15
    48 3 7 16 11 4 15 3 15 11 12 12 4 7 8 16
    49 3 8 7 15 4 8 15 12 3 16 4 16 12 11 11
    50 3 8 15 4 16 4 8 7 7 15 12 11 3 16 12
    51 3 10 10 15 16 5 4 6 16 4 3 15 9 6 9
    52 3 13 11 5 4 12 4 11 6 6 5 3 14 13 12
    53 3 14 7 9 14 10 13 8 7 8 10 4 4 13 9
    54 5 5 8 14 16 13 6 14 13 7 8 15 6 15 7
    55 5 6 11 7 10 8 5 8 7 12 12 10 6 9 11
    56 5 6 13 8 13 5 7 7 6 16 14 15 8 16 15
    57 5 7 9 10 7 11 6 12 9 12 11 8 8 6 10
    58 5 9 6 8 10 9 8 12 5 11 10 11 12 7 7
    59 5 10 10 12 8 11 9 7 8 9 5 12 6 7 6
    60 5 10 12 6 5 12 8 9 7 6 7 8 11 11 9
    61 5 13 15 15 14 8 6 7 16 8 7 13 14 5 16
    62 9 10 13 10 11 15 15 9 16 12 14 13 16 14 11
    63 9 11 12 15 12 9 13 13 11 14 10 16 15 14 16
    64 9 12 10 15 13 14 9 14 15 11 11 13 12 16 10

References
  1. 3GPP Technical Specification TS 25.213 V3.0.0, "Spreading and Modulation (FDD)," October 1999.
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