Clock frequencies of 667 MHz on core_clk and 400 MHz on other clocks are assumed. However, for details on the clock frequency supported by a device and resource utilization, visit the Performance and Resource Utilization web page. Packing is assumed to be enabled; if disabled, then for codes with PSIZE ≤ 64 there is likely to be a significant throughput reduction.
The 5G New Radio (NR) BER performance is shown in the following plots. This includes puncturing of the first 2*Z information bits (where Z=PSIZE). For each SNR point, groups of 4800 blocks, or frames, have been run until 75 frame errors have occurred. The decoder has been configured with a maximum of 32 iterations and early termination on parity pass. BPSK modulation and LLR demodulation has been used along with an AWGN channel. Additional LLR scaling has been applied at the input of the decode to maximize its dynamic range. The tables below show the scaling factors used and the normalization factors used for each code.
| SNR | LLR Scaling | SNR | LLR Scaling | SNR | LLR Scaling | SNR | LLR Scaling | SNR | LLR Scaling |
|---|---|---|---|---|---|---|---|---|---|
| -5 | 1.9375 | -2.25 | 1.3125 | 0.5 | 0.90625 | 3.25 | 0.59375 | 6 | 0.40625 |
| -4.75 | 1.875 | -2 | 1.28125 | 0.75 | 0.875 | 3.5 | 0.5625 | 6.25 | 0.375 |
| -4.5 | 1.78125 | -1.75 | 1.21875 | 1 | 0.84375 | 3.75 | 0.5625 | 6.5 | 0.375 |
| -4.25 | 1.78125 | -1.5 | 1.1875 | 1.25 | 0.8125 | 4 | 0.53125 | 6.75 | 0.34375 |
| -4 | 1.65625 | -1.25 | 1.125 | 1.5 | 0.78125 | 4.25 | 0.5 | 7 | 0.34375 |
| -3.75 | 1.625 | -1 | 1.09375 | 1.75 | 0.75 | 4.5 | 0.5 | 7.25 | 0.3125 |
| -3.5 | 1.5625 | -0.75 | 1.0625 | 2 | 0.71875 | 4.75 | 0.46875 | 7.5 | 0.3125 |
| -3.25 | 1.53125 | -0.5 | 1.03125 | 2.25 | 0.6875 | 5 | 0.46875 | 7.75 | 0.28125 |
| -3 | 1.4375 | -0.25 | 1 | 2.5 | 0.6875 | 5.25 | 0.4375 | 8 | 0.28125 |
| -2.75 | 1.40625 | 0 | 0.96875 | 2.75 | 0.65625 | 5.5 | 0.4375 | - | - |
| -2.5 | 1.375 | 0.25 | 0.9375 | 3 | 0.625 | 5.75 | 0.40625 | - | - |
| Code Name | N | K | Rate (K/N) | P Size | Normalization |
|---|---|---|---|---|---|
| graph1_l5_p32 | 864 | 704 | 0.815 | 32 | 0.8125 |
| graph1_l5_p384 | 10368 | 8448 | 0.815 | 384 | 0.8125 |
| graph2_l7_p32 | 544 | 320 | 0.588 | 32 | 0.8125 |
| graph2_l7_p384 | 6528 | 3840 | 0.588 | 384 | 0.8125 |
| graph1_l46_p32 | 2176 | 704 | 0.324 | 32 | 0.6875 |
| graph1_l46_p384 | 26112 | 8448 | 0.324 | 384 | 0.6875 |
| graph2_l42_p32 | 1664 | 320 | 0.192 | 32 | 0.5625 |
| graph2_l42_p384 | 19968 | 3840 | 0.192 | 384 | 0.5625 |
The WiFi 802.11ac BER performance is shown in the following plots. For each SNR point, groups of 10,000 blocks, or frames, have been run until 500 frame errors have occurred. The decoder has been configured with a maximum of 32 iterations and early termination on parity pass. BPSK modulation and LLR demodulation has been used along with an AWGN channel. The default normalization factor of 12/16 has been used for all the codes.
The DOCSIS 3.1 BER performance is shown in the following plots. For each SNR point, groups of 10,000 blocks, or frames, have been run until 500 frame errors have occurred. The decoder has been configured with a maximum of 32 iterations and early termination on parity pass. BPSK modulation and LLR demodulation has been used along with an AWGN channel. The default normalization factor of 12/16 has been used for all the codes.
The Turbo Decode BER performance is shown in the following plots. The plots have been generated by a hardware based BER tester using BPSK modulation and LLR demodulation which includes an additional 0.5 scaling applied to the LLR values. For each SNR point, groups of 10,000 blocks, or frames, have been run until 500 frame errors have occurred. The Turbo decode has been configured with a maximum of 32 iterations with early termination on CRC pass.
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