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In order to improve network performance and cell-edge UE experience, a study item (SI) on "LTE coverage enhancements" has been proposed and approved for LTE-Advanced. In this SI, it was concluded that the coverage of medium data rate PUSCH (Physical uplink shared channel) is poorer than other LTE channels, with significant gap observed. Therefore, coverage improvement for medium data rate...
This paper considers wireless sensor networks with limited bandwidth, where sensors must transmit sensing results that are distorted with noise uncertainty, to the fusion center reliably and efficiently. A class of rate-1 linear complex-field coding (CFC) transmission strategy is developed, to effectively protect the noisy observation of the signals without any bandwidth expansion. Pairwise error...
Considering a cooperative multicast system where 2 sources transmit data to 2 users with the help of 1 relay (2-1-2), the performance of a network coded cooperative (NCC)transmission scheme is evaluated. Due to the use of network coding, more than one source node can be served simultaneously by one cooperative transmission. As a result, the time resource consumed by the cooperative transmission is...
We propose a forwarding scheme by superposition coding for wireless relaying, in which a relay will not forward a message to a destination if the destination has successfully decoded the message directly from a source. In our scheme, flag signal and data signal are superimposed and transmitted by the source, and according to whether the flag signal has been successfully decoded by the relay, the relay...
As good candidates for uplink multiple access scheme in broadband wireless communication systems, orthogonal frequency division multiplexing (OFDM) and single-carrier (SC) with frequency division multiple access (FDMA) have gained enough attention recently. However, the non-linearity of amplifier deteriorates the performances of these two schemes. On the assumption of non-linear amplifier applied,...
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