p to 100 transmissions generally don't allow packet retransmission mW, but their output is controlled to have only because throughput cannot be delayed, SO interference enough power to give a required signal level at the results in a decrease in message quality. receiving terminal. Following are parameters that affect interference Signal-to-interference ratio of the victim receiver, between Bluetooth and Wi-Fi: SIR, for a specified symbol or frame error ratio. Type of modulation, and whether error-correction coding is used. Frequency and time overlap. A collision occurs when the interferer transmits at the same time as the A general configuration for the location of Wi-Fi and in- desired transmitter and is strong enough to cause terfering Bluetooth terminals is given in Figure 5.2-26. In a bit or symbol error in the received packet. this discussion, only transmissions from the access point Packet length. The longer the packet length of the to the mobile terminal are considered. We can get an idea Wi-Fi system, relative to a constant packet length of the vicinity around the Wi-Fi mobile terminal in which and hop rate of Bluetooth, the longer the victim may operating Bluetooth terminals will affect transmissions be exposed to interference from one or more from the access point to the mobile terminal by exam- collisions and the greater the probability of a packet ining the following parameters: error. Bit rate. Generally, the higher the bit rate, the CIcc, Clac-Ratio of signal carrier power to lower the receiver sensitivity and therefore the co-channel or adjacent channel interfering power for more susceptible the victim will be to packet a given bit or packet error rate (probability). error for given desired and interfering signal strengths. On the other hand, higher bit rates usually PWF, PBT-Wi-Fi and Bluetooth radiated power result in reduced packet length, with the opposite outputs. effect. PL : Kdr-Path loss which is a function of distance Use factor. Obviously, the more often the interferer d between transmit