Hardware Decoding Accelerator of (73, 37, 13) QR Code for Power Line Carrier in UPIoT

Table 8

Decoding time under various conditions.

Environment	Works	Error numbers (us)						Average 1	Average 2
		1	2	3	4	5	6
PC	DS in this paper	1.12	2.16	4.24	19.76	48.36	203.66	190.00	3.863
	IFBM in [17]	205.5	142.7	219.3	2955.9	3104.6	11824	11065.57	378.42
	ADA in [18]	1.8771	17.412	71.391	269.36	536.31	5954.5	5482.66	49.97
	SSDDA in [19]	1.7002	2.5378	22.863	286.47	482.94	701.54	681.27	26.4
	Algorithm in [20]	1134	1848	2611	6822	11417	30915	29193.32	2089
	DS in [14]	0.854	5.69	38.3	95.8	198	245	240.2691	16.02
Arria10	Hardware implemented in this paper	0.0461	0.0461	0.0461	0.0461	0.0461	0.0461	0.0461	0.0461

Note that the average decoding time 1 is calculated by supposing all error patterns have the same probability of occurrence. And the average decoding time 2 is calculated by supposing there must be 1~5 errors in the received code and is under the environment of 7 dB SNR, where the occurring probability is 41.27% of one error, 36.49% of two errors, 15.92% of three errors, 5.03% of four errors, 1.1% of five errors, and 0.2% of six errors.