Cooperative Signal Processing in Fog Radio Access Networks

In this chapter, we will discuss the cooperative signal processing technique in F-RANs, which is a key enabler to boost F-RAN capacity. First, cooperative non-orthogonal multiple access (NOMA) is presented aiming at further improving user data rate compared to traditional orthogonal multiple access and NOMA schemes. Second, as an effective tool to handle information asymmetry, contract theory is involved and the interference mitigation between the macrocell and remote radio heads (RRHs) is formulated as a contract design problem, in which RRHs can use cooperative signal processing to help the macrocell serve its user. By simulation, the effectiveness of cooperative NOMA and contract based cooperative signal processing deign is confirmed.

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