Under CSMA/CA (Carrier sense multiple access with collision avoidance), a transmitter continuously senses the channel state prior to transmitting.
Indeed, prior to transmitting a frame, a station computes the amount of time necessary to send the frame based on the frame's length and data rate.
Unfortunately, given the lack of reliable data regarding certain HIV risk factors in our database, we were not able to analyze HIV testing trends and HIV case detection among other populations at high risk for HIV infection (e.g. intravenous drug users, men who have sex with men, patients with history of prior sexually transmitted infections, etc).
Motivation for safe sex practices was not always associated with action even in the face of prior sexually transmitted infection.
All those approached seriously depended on the completeness of the prior knowledge transmitted to the system, at the beginning of the data analysis process.
For example, sexual risk behaviors were limited to reports of a high risk partner, prior sexually transmitted infections, and frequency of condom use.
In contrast, patients with HPV+ HNSCC tend to be younger and have risk factors classically associated with cervical cancer, including a high number of sexual partners, an early age of first sexual encounter, and prior sexually transmitted infections.
where P(d t = d (m)) is the prior probability of transmitting symbol/codeword d (m) time instant t.
Step 4: After the route optimization procedure, the packets in the FPB will be transmitted prior to those in the NPB.
A novel scheme is described for determining the position of an unknown mobile terminal without any prior information of transmitted signals, keeping in mind, for example, radiowave surveillance.
There, the channels have to be estimated by using a set of orthogonal sequences that are transmitted prior to the RN16 sequences note that we omit the bit overhead for the channel estimation sequences, although they will have a significant overhead in practice.
