Those with previous falls, as well as those with gait or balance disorders, are most at risk. Risk factors. Risk factors for osteoporotic fracture can be split between nonmodifiable and (potentially) modifiable. In addition, osteoporosis is a recognized complication of specific diseases and disorders. Medication use is theoretically modifiable, although in many cases, the use of medication that increases osteoporosis risk may be unavoidable. Caffeine is not a risk factor for osteoporosis. It is more likely in females than males. Nonmodifiable
In fast frequency hopping type, one complete or fraction of data symbol is transmitted during the time between two frequency hops. Due to this, frequency hopping rate may exceed often compare to data bit rate in a binary sequence. In fast frequency hopping, time duration between two hops (Th or Tc as shown) <= data bit duration (Tb). This is depicted in the figure-2. â¨The fast frequency hopping provides frequency diversity at symbol level. This will benefit the transmitted signal against fading as well as narrowband jamming.
In wireless communications, the term Hz (pronounced Hertz after the name of 19th century scientist Heinrich Hertz) refers to the transmission frequency of radio signals in cycles per second: 1 GHz (Gigahertz) equals one billion cycles per second (or 1000 MHz).