Rain Attenuation Study over an 18 GHz Terrestrial Microwave Link in South Korea

Table 4

(a) Percentage error obtained after testing over the interval [0.001% to 1%] for horizontal polarization

Methods (horizontal polarization)	Parameters	Time percentage (%p)													ITU-R P.311-15
		1	0.5	0.3	0.2	0.1	0.05	0.03	0.02	0.01	0.005	0.003	0.002	0.001
ITU-R P.530-16		−0.73	−0.78	−0.81	−0.78	−0.71	−0.61	−0.65	−0.60	−0.59	−0.51	−0.50	−0.48	−0.48	−1.04	0.33	1.1
	STD	0.10	0.15	0.17	0.15	0.08	0.02	0.02	0.03	0.05	0.12	0.14	0.15	0.16
	RMS	3.95	7.66	12.16	12.69	12.43	11.23	16.16	15.74	19.10	17.88	19.63	20.89	24.22
da Silva Mello		−0.95	−0.92	−0.91	−0.89	−0.82	−0.71	−0.71	−0.66	−0.62	−0.54	−0.54	−0.55	−0.57	−1.48	0.7	1.64
	STD	0.23	0.20	0.19	0.16	0.10	0.01	0.01	0.07	0.10	0.18	0.18	0.17	0.16
	RMS	5.12	9.10	13.78	14.44	14.34	12.95	17.72	17.15	20.33	19.00	19.00	23.83	28.75
Moupfouma		−0.55	−0.66	−0.73	−0.73	−0.69	−0.59	−0.68	−0.61	−0.53	−0.40	−0.40	−0.35	−0.36	−0.85	0.31	0.91
	STD	0.01	0.10	0.17	0.17	0.13	0.04	0.12	0.05	0.03	0.16	0.16	0.20	0.20
	RMS	2.96	6.50	10.92	11.84	12.09	10.82	16.92	15.86	17.12	13.95	13.95	15.22	18.16
Abdulrahman		−0.98	−0.97	−0.96	−0.94	−0.89	−0.80	−0.79	−0.74	−0.69	−0.60	−0.60	−0.58	−0.58	−1.89	1	2.14
	STD	0.20	0.19	0.18	0.16	0.11	0.03	0.01	0.04	0.09	0.18	0.18	0.19	0.19
	RMS	5.31	9.53	14.45	15.33	15.64	14.69	19.70	19.25	22.45	20.86	20.86	25.21	29.64
Proposed		−0.23	−0.29	−0.38	−0.30	−0.13	0.09	−0.06	0.01	−0.05	0.02	0.02	−0.08	−0.16	−0.14	0.16	0.22
	STD	0.11	0.17	0.26	0.18	0.01	0.21	0.06	0.13	0.08	0.15	0.15	0.04	0.04
	RMS	1.24	2.85	5.71	4.95	2.35	1.65	1.50	0.19	1.50	0.83	0.83	3.49	8.23

(b) Percentage error obtained after testing over the interval (0.001% to 1%) for vertical polarization

Methods (vertical polarization)	Parameters	Time percentage (%p)													ITU-R P.311-15
		1	0.5	0.3	0.2	0.1	0.05	0.03	0.02	0.01	0.005	0.003	0.002	0.001
ITU-R P.530-16		1.96	2.18	−0.60	−0.73	−0.64	−0.51	−0.52	−0.50	−0.49	−0.39	−0.37	−0.44	−0.42	−0.52	0.53	0.74
	STD	2.07	2.29	0.48	0.61	0.52	0.39	0.41	0.39	0.38	0.28	0.25	0.33	0.31
	RMS	0.80	1.24	3.55	7.95	7.36	6.00	7.91	8.55	10.70	9.06	9.57	14.69	16.28
da Silva Mello		−0.27	0.30	−0.79	−0.84	−0.75	−0.61	−0.60	−0.57	−0.55	−0.46	−0.46	−0.54	−0.55	−0.85	0.5	0.98
	STD	0.25	0.81	0.28	0.33	0.24	0.10	0.09	0.05	0.03	0.06	0.06	0.03	0.04
	RMS	0.11	0.17	4.73	9.22	8.74	7.26	9.12	9.73	11.98	10.57	11.90	18.07	21.28
Moupfouma		3.89	3.55	−0.46	−0.64	−0.65	−0.44	−0.49	−0.44	−0.43	−0.30	−0.24	−0.35	−0.35	−0.37	0.56	0.67
	STD	3.69	3.34	0.66	0.84	0.86	0.64	0.70	0.64	0.63	0.51	0.44	0.56	0.56
	RMS	1.58	2.02	2.72	7.00	7.58	5.16	7.47	7.52	9.33	7.06	6.14	11.78	13.53
Abdulrahman		−0.74	−0.44	−0.90	−0.92	−0.85	−0.74	−0.71	−0.67	−0.63	−0.53	−0.51	−0.59	−0.58	−1.19	0.6	1.33
	STD	0.07	0.24	0.22	0.24	0.17	0.06	0.03	0.01	0.05	0.15	0.16	0.09	0.10
	RMS	0.30	0.25	5.36	10.03	9.88	8.75	10.80	11.52	13.79	12.23	13.40	19.44	22.33
Proposed		2.95	4.62	−0.21	−0.45	−0.23	0.08	0.05	0.08	0.06	0.20	0.17	−0.04	−0.09	0.08	0.38	0.39
	STD	2.40	4.06	0.76	1.00	0.78	0.47	0.51	0.47	0.50	0.35	0.39	0.59	0.64
	RMS	2.95	4.62	0.21	0.45	0.23	0.08	0.05	0.08	0.06	0.20	0.17	0.04	0.09

(c) Percentage error obtained after testing over the interval (0.001% to 1%) for 38 and 75 GHz

Methods (vertical polarization)	Parameters	Time percentage (%p)													ITU-R P.311-15
		1	0.5	0.3	0.2	0.1	0.05	0.03	0.02	0.01	0.005	0.003	0.002	0.001
Proposed under 38 GHz		2.03	2.91	−0.28	−0.50	−0.24	0.06	−0.04	0.03	0.07	0.17	0.07	−0.04	−0.08	0.03	0.36	0.36
	STD	1.71	2.59	0.60	0.82	0.56	0.26	0.36	0.29	0.25	0.15	0.25	0.36	0.40
	RMS	0.83	1.94	1.51	5.22	2.58	0.66	0.64	0.59	1.44	4.06	1.90	1.47	3.25
Proposed under 75 GHz		2.57	0.70	−0.01	−0.28	−0.18	0.07	0.01	0.07	−0.05	0.08	0.03	0.05	−0.08	0.07	0.27	0.28
	STD	2.35	0.47	0.24	0.51	0.41	0.16	0.22	0.16	0.28	0.15	0.20	0.18	0.31
	RMS	2.60	2.50	0.09	3.81	2.89	1.10	0.13	1.45	1.34	2.32	0.83	1.55	3.09