Car networking uplink synchronization system and method based on OFDMA access technology
An access technology, a technology of the Internet of Vehicles, which is applied in the field of the Internet of Vehicles uplink synchronization system, can solve the problems of low system throughput, low reliability, and high system delay, achieve high system throughput, high reliability, and overcome system throughput. low rate effect
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[0047] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0048] System embodiment
[0049] According to an embodiment of the present invention, a car networking uplink synchronization system based on an Orthogonal Frequency Division Multiple Access (OFDMA for short) access technology is provided. Such as Figure 1-Figure 6 As shown, the uplink synchronization system of the Internet of Vehicles based on OFDMA access technology in this embodiment includes a method for dividing the common transmission channel of the Internet of Vehicles into M sub-channels, so that the on-board unit OBU can send transmission opportunity request frames on corresponding sub-channels The transmitter used to separate the OFDMA signal input by...
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