| Specifications | IEEE C802.16e-04/193 STC Layer Burst Mapping and Vertical Encoding Erik Lindskog, David Garrett, Brett Schein, Kamlesh Rath, Aditya Agrawal |
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| Specifications | IEEE C802.16e-04/193 STC Layer Burst Mapping and Vertical Encoding Erik Lindskog, David Garrett, Brett Schein, Kamlesh Rath, Aditya Agrawal |
| Business section |
| Specifications | IEEE C802.16e-04/193 STC Layer Burst Mapping and Vertical Encoding Erik Lindskog, David Garrett, Brett Schein, Kamlesh Rath, Aditya Agrawal |
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| Content | 2004-06-25 IEEE C802.16e-04/193r0 5 subcarriers for first slot are applied to STC matrix input S1, all of the data subcarriers of the second slot are applied to S2, etc. When vertical encoding is enabled the individual data subcarriers are allocated to the matrix input S1, S2, etc based on the following equation: Sm(n,k)= ((n-1 + k) MOD M) + 1 Where Sm specifies the mth input the STC matrix given an original location of n, and a data subcarrier location k. M = number of inputs to the STC matric n = original slot STC matrix input (1.M) k = data subcarrier index (0.47) The rotation works for all STCs, but the most benefit will be achieved with the pure spatial multiplexing STCs which do not have inherent spatial diversity. Figure 5 shows an example of the subcarrier re-ordering process. At the receiver, the cyclic rotation is undone after the STC demodulation process. Specific Modifications to the text Modifications will be inserted here related to section 8.4.5.3 on the DL_MAP_Basic_IE(), and including a version of the text above to fully specify the modes. The MIMO_DL_basic_IE() includes a switch to define vertical encoding mode. Table 281 – MIMO DL basic IE format Syntax Size Notes Figure 5: Per subcarrier reordering for vertical encoding S1(k) Cyclic rotation per subcarrier k SM(k) S3(k) S2(k) S1(k) SM(k) S3(k) S2(k) S1(0) S1(3) S1(2) S1(1) …. S1(0) S4(3) S3(2) S2(1) …. Example rotation of S1 |
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| Following Datasheets | C80216e-04_194 (9 pages) C80216e-04_194r1 (6 pages) C80216e-04_195r1 (5 pages) C80216e-04_196 (3 pages) C80216e-04_197 (4 pages) C80216e-04_198 (7 pages) C80216e-04_198r1 (8 pages) C80216e-04_199 (6 pages) C80216e-04_19r1 (3 pages) C80216e-04_20 (6 pages) |
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