… two-way) relay channel with two nodes and one relay. The channels in the forward direction
… general) than the channels in the backward direction, ie channel reciprocity is not assumed. …

… The simplest form of collaboration can be modeled as a Relay Channel (RC) [2]. The RC is
a multi-terminal network where a source conveys information to a destination with the help of …

… Remark 4: It is noteworthy that the constant gap to the capacity is only a function of K, and
is … We can see that the gap is much smaller when the relay power is equal to the power …

… of arbitrary Gaussian relay networks with uncorrelated noises to within a constant gap, this …
three-node Gaussian relay channel with correlated noises to within a constant gap. However, …

… Gaussian half duplex relay channel, where the relay node can … to within a constant gap
regardless of the channel parameters. … ) of the channel, which for certain channel parameters is …

… In this work we considered the half duplex relay channel. First we derived the exact capacity
of the linear deterministic approximation of the Gaussian noise channel at high SNR; we …

… to the capacity of Gaussian RCs, regardless of the channel … issue and the role that relays
can play to guarantee reliability in … and relaying together, the Interference Relay Channel (IRC). …

… context of single source or single destination relay channels [2]. Indeed, … constant gap to
the capacity of additive white Gaussian noise (AWGN) relay channels, regardless of the channel …

… 3) For the G-HD-RC, we prove that the above achievable schemes are optimal to within a
constant gap, uniformly over all channel parameters. In particular, PDF is optimal to within 1 bit, …

… specialized to the 3-node relay channel and yield constant gap results in terms of the number
… We consider the additive and multiplicative gaps on 2000 2 × 2 MIMO relay channels with …