Power control in random access ad hoc networks

Routing and power control in frequency-hop random-access ad hoc networks

“…Nodes undergo no mobility. The physical layer is based on the frequency-hop model used in [9]. Each packet is encoded using an (N, K) Reed Solomon (RS) code, with a single code symbol transmitted per hop.…”

“…The power level chosen is assumed to include enough margin that thermal noise is negligible. Radios are also allowed, with probability p, to increase the power of a particular frequency hop by µ dB, as described in [9]. This gives additional margin on certain hops, making it more likely that they are not erased.…”

“…It is possible to keep the number of packets lost due to collisions reasonably small in networks that do not use forwarding by limiting the rate at which nodes access the channel, for example by backing off as packets are lost [8], and through power control [9]. Still, without forwarding through intermediate radios, there is a limit to the maximum throughput.…”

Adaptive-rate techniques for frequency-hop multiple-access packet-radio networks

“…Nodes are uniformly distributed over a disc-shaped region in the same manner as described in [12], and nodes are not mobile. Each source radio randomly chooses one other radio as its intended receiver.…”

“…It is assumed that each radio knows the path loss to every other radio. Reception in the presence of interference is modeled using the power-based capture considered in [12]. A symbol is erased at the receiver if the total interference power in the same FH channel exceeds the received power of the transmission of interest.…”