Table 2.

Modulation types.

Number of Connectable Vehicles, N	0	1	2	3	4
Conventional Method 1	Store data	QPSK	QPSK	QPSK	QPSK
Conventional Method 2	Store data	16QAM	16QAM	16QAM	16QAM
Conventional Method 3	Store data	64QAM	64QAM	64QAM	64QAM
Proposed Method	Store data	64QAM	64QAM	16QAM	16QAM