This article is about a wireless technology standard. 30,000 member companies in the areas of telecommunication, computing, networking, and consumer electronics. The Bluetooth SIG oversees development of bluetooth research paper pdf specification, manages the qualification program, and protects the trademarks. Both were working for Ericsson in Lund.
Danish tribes into a single kingdom and, according to legend, also introduced Christianity. Vikings and King Harald Bluetooth. The implication is that Bluetooth does the same with communications protocols, uniting them into one universal standard. Bluetooth operates at frequencies between 2402 and 2480 MHz, or 2400 and 2483. 2 MHz wide at the bottom end and 3. 5 MHz wide at the top. 4 GHz short-range radio frequency band.
Bluetooth divides transmitted data into packets, and transmits each packet on one of 79 designated Bluetooth channels. Each channel has a bandwidth of 1 MHz. 2 MHz spacing, which accommodates 40 channels. Since the introduction of Bluetooth 2.
8DPSK modulation may also be used between compatible devices. All devices share the master’s clock. Packet exchange is based on the basic clock, defined by the master, which ticks at 312. In the simple case of single-slot packets the master transmits in even slots and receives in odd slots. The slave, conversely, receives in even slots and transmits in odd slots.