نتایج جستجو برای: causal cognitive interference channel
تعداد نتایج: 610328 فیلتر نتایج به سال:
This work deals with communication over the AWGN channel with additive discrete interference, where the sequence of interference symbols is known causally at the transmitter. We use Shannon’s treatment for channels with side information at the transmitter as a framework to derive “optimal precoding” and “channel code design criterion” for the channel with known interference at the transmitter. ...
In a premier paper on the information-theoretic analysis of a two-user cognitive interference channel (CIC) [1], Devroye et al. presented an achievable rate region for the two-user discrete memoryless CIC. The coding scheme proposed by Devroye et al. is correct but unfortunately some rate-terms in the derived achievable rate region are incorrect (in fact incomplete) because of occurring some mi...
This paper considers the ECMA-368 standard based on Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) as an Ultra Wideband (UWB) system in the presence of interference from an IEEE 802. 16 WiMAX systems operating at 3. 5 GHz. Simulations are conducted following the standards and adopting the IEEE 802. 15. 3a channel model CM1. This paper shows that the system fails because of the W...
Cognitive cellular-femtocell networks are considered as future mobile communication networks which can satisfy challenging requirements of current mobile communications including high user density, quality of service (QoS) provision and efficient spectrum utilization. In this paper, we present a novel downlink channel allocation scheme which allocates downlink channels to new connection request...
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