Status of this Memo This RFC specifies an IAB standards track protocol for the Internet community. Please refer to the current edition of the "IAB Official Protocol Standards" for the standardization state and status of this protocol. Abstract The Point-to-Point Protocol (PPP) provides a method for transmitting datagrams over serial point-to-point links. PPP is composed of three parts: 1. A met...

Most point-to-point communication links (e.g., the telephone line channel, fixed microwave channels, etc.) are well-modeled using a bandpass additive noise system model of the form shown in Figure 1.1. All the signals in this model are written with “tildas” which will be dropped in the complex baseband representation of the following section. A more detailed description of the link model is as ...

in this paper, we improve some recent coupled fixed point resultsfor single-valued operators in the framework of ordered $b$-metricspaces established by bota et al. [m-f. bota, a. petrusel, g.petrusel and b. samet, coupled fixed point theorems forsingle-valued operators in b-metric spaces, fixed point theoryappl. (2015) 2015:231]. also, we prove that perov-type fixed pointtheorem in ordered gen...

in this paper we obtain a necessary and a sufficient condition for the set of ω_0-nearest points ( ω_0-farthest points) to be non-empty or a singleton set in normed linear spaces. we shall find a necessary and a sufficient condition for an uniquely remotal set to be a singleton set.