We outline a code construction for half-duplex relays and for the Rayleigh fading channels of Section 4.4. The design is based on a point-to-point multi-antenna strategy known as Diagonal Bell Labs Layered Space-Time (D-BLAST) [53]. Other code constructions for relay channels are described in, e.g., [83, 200] (convolutional codes), [111] (space-time codes), [198] (turbo codes), […]
Introduction The previous topic examined cooperative strategies when no fading or fast fading is present. The main performance metric was rate because long codes can average out the effects of noise and fading and can make the error probability approach zero. In this topic, we consider another extreme, namely, slow fading where the channel gains […]