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A novel quantize-and-forward scheme with two relays is proposed in this paper. In our scheme, each relay only processes one bit of the quantized codeword. The principle of selecting the aforementioned bit is based on the channel condition of the relay links. Compared with the single-relay scheme, the system consumes the same resources, while each relay has a prolonged life since it only transmits...
This paper studies multi-relay compressive cooperative schemes in which the source and the relays utilize compressive sensing (CS) as joint source-channel coding (JSCC). We consider four decode-and-forward (DF) strategies to forward the CS measurements here, namely receive diversity, code diversity, successive decoding and concatenated decoding, and derive their respective achievable rates in the...
As a new wireless network access technology, IEEE 802.16 can provide broadband Internet connection to user. However, it was found that the mandatory contention resolution scheme in IEEE 802.16 can not run perfectly in most cases, especially when the traffic is heavy. In this paper, a novel self-adaptive truncated binary exponential backoff scheme has been proposed to improve the performance of the...
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