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- W4299487919 abstract "This paper addresses three issues in the field of ad hoc network capacity: the impact of i)channel fading, ii) channel inversion power control, and iii) threshold-based scheduling on capacity. Channel inversion and threshold scheduling may be viewed as simple ways to exploit channel state information (CSI) without requiring cooperation across transmitters. We use the transmission capacity (TC) as our metric, defined as the maximum spatial intensity of successful simultaneous transmissions subject to a constraint on the outage probability (OP). By assuming the nodes are located on the infinite plane according to a Poisson process, we are able to employ tools from stochastic geometry to obtain asymptotically tight bounds on the distribution of the signal-to-interference (SIR) level, yielding in turn tight bounds on the OP (relative to a given SIR threshold) and the TC. We demonstrate that in the absence of CSI, fading can significantly reduce the TC and somewhat surprisingly, channel inversion only makes matters worse. We develop a threshold-based transmission rule where transmitters are active only if the channel to their receiver is acceptably strong, obtain expressions for the optimal threshold, and show that this simple, fully distributed scheme can significantly reduce the effect of fading." @default.
- W4299487919 created "2022-10-02" @default.
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- W4299487919 date "2007-07-24" @default.
- W4299487919 modified "2023-09-23" @default.
- W4299487919 title "The effect of fading, channel inversion, and threshold scheduling on ad hoc networks" @default.
- W4299487919 doi "https://doi.org/10.48550/arxiv.0707.3584" @default.
- W4299487919 hasPublicationYear "2007" @default.
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