Title :
Optimal transmission ranges and code rates for frequency-hop packet radio networks
Author :
Subbarao, Madhavi W. ; Hughes, Brian L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Johns Hopkins Univ., Baltimore, MD, USA
fDate :
4/1/2000 12:00:00 AM
Abstract :
We consider a frequency-hopping multihop packet radio network using M-ary frequency-shift keying modulation in a Rayleigh fading environment. Each node transmits packets using an extended (n, k) Reed-Solomon code and the slotted ALOHA channel access protocol. For this network, we determine the optimum transmission range, optimum code rate, and optimum slotted ALOHA transmission probability to be used by each node in the network. Tradeoffs in choosing the transmission range and code rate, and the spectral efficiency of the network are captured in a new performance measure, information efficiency, which is analogous to expected forward progress. Maximizing the information efficiency yields the optimum desired network parameters
Keywords :
Rayleigh channels; Reed-Solomon codes; access protocols; frequency hop communication; frequency shift keying; land mobile radio; multiuser channels; optimisation; packet radio networks; probability; M-ary FSK modulation; M-ary frequency-shift keying; PRN; Rayleigh fading environment; extended Reed-Solomon code; frequency-hop packet radio networks; information efficiency; mobile packet radio networks; network node; optimal transmission ranges; optimum code rates; optimum network parameters; optimum slotted ALOHA transmission probability; performance measure; slotted ALOHA channel access protocol; spectral efficiency; Access protocols; Error correction codes; Frequency modulation; Frequency shift keying; Helium; Modulation coding; Packet radio networks; Performance analysis; Rayleigh channels; Spread spectrum communication;
Journal_Title :
Communications, IEEE Transactions on
