Review and Progress towards the Capacity Boost of Overhead and Underground Medium-Voltage and Low-Voltage Broadband over Power Lines Networks: Cooperative Communications through Two- and Three-Hop Repeater Systems

Table 1

Five indicative overhead distribution BPL topologies [3, 17, 18, 20].

Denotation	Description	Number of branches; (N)	Lengths of distribution TLs [𝐿1⋯𝐿𝑁+1]	Lengths of branch TLs [𝐿𝑏1⋯𝐿𝑏𝑁]
Overhead urban case A	A typical urban topology	3	[500 m 200 m 100 m 200 m]	[8 m 13 m 10 m]
Overhead urban case B	An aggravated urban topology	5	[200 m 50 m 100 m 200 m 300 m 150 m]	[12 m 5 m 28 m 41 m 17 m]
Overhead suburban case	A typical suburban topology	2	[500 m 400 m 100 m]	[50 m 10 m]
Overhead rural case	A typical rural topology	1	[600 m 400 m]	[300 m]
Overhead “LOS” case	“LOS” transmission	0	[1000 m]	—