Research Article
Multimode Flex-Interleaver Core for Baseband Processor Platform
Table 2
Architecture exploration for different standards.
| | Standard | Interleaver type | Block size | Adders/comparator | Multiplier | HW LUT | Configurable LUT/registers | Memory size (SB: soft bits) |
| | HSPA+ | Prime interleaver for BTC | 5114 | 7 | 1 | | | | | | | | | | | 1st, 2nd, and HS-DSCH interleaving | 5114 | 2 | 1 | | — | | | | |
| | 3GPP-LTE | QPP interleaver for BTC | 6144 | 5 | — | | | | | Sub-Block interleaver | 6144 | 2 | 1 | | — | |
| | WiMAX (802.16e) | Channel interleaver | 1536 | 5 | 1 | | | | | | Block interleaver b/w RS and CC | 2550 | 2 | 1 | — | — | | | CTC interleaver | 2400 | 4 | — | | | |
| | WLAN (802.11 a/b/g) | Channel interleaver | 288 | 5 | 1 | | | | |
| | 802.11nEnhanced WLAN | Channel interleaver with frequency rotation | 2592 | 9 | 1 | | | | | |
| | DVBETSI EN 300-744 | Outer convolutional interleaver | 1122 | 4 | 1 | — | | | | | Inner bit interleaver | 126 | 8 | — | — | | | | | | Inner symbol interleaver | 6048 | 1 | — | | — | |
| | General purpose use | Row or/and Column permutation given as a table | 4096 | 2 | 1 | — | | | |
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