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In this paper, we study the degrees of freedom (DoF) of the asymmetric multi-input-multi-output interference broadcast channel (MIMO-IBC). By introducing a notion of connection pattern chain, we generalize the genie chain proposed in [10] to derive and prove the necessary condition of IA feasibility for the asymmetric MIMO-IBC, which is denoted as irreducible condition. It is necessary for both linear...
Interference neutralization (IN) is a new interference management mechanism found from and inherent in interference networks with relays. In this paper, we study the feasibility of IN for relay-aided multi-input-multi-output (MIMO) interference broadcast channel (MIMO-IBC) without symbol extension. Assuming linear transceiver with multiple amplify-and-forward relays, we consider fully connected symmetric...
In this paper, we develop linear interference alignment (IA) approach for multi-input-multi-output interference broadcast channel (MIMO-IBC). Since multiple data streams from each base station (BS) to multiple mobile stations (MSs) experience identical channel, it is hard to ensure the rank constraint to the intended MSs in the desired cell meanwhile ensure the interference aligned at the unintended...
This paper implements a fast disposing wireless sensor network (WSN) with low power consumption. The system, which is based on ZigBee technology, detects environment information, such as temperature, relative humidity and pressure etc. By the portable structure design, the system can be established or dismantled quickly in a desired area, such as a incomplete building, a temporary watched environment...
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