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Gaussian Interference Channel Capacity to Within One Bit - page 6 / 24

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State-of-the-Art

If INR1->2 > SNR1 and INR2->1 > SNR2, then capacity region Cint is known (strong interference, Han-Kobayashi 1981, Sato 81)

Capacity is unknown for any other parameter ranges.

Best known achievable region is due to Han-Kobayashi (1981).

Hard to compute explicitly.

Unclear if it is optimal or even how far from capacity.

Some outer bounds exist but  unclear how tight (Sato 78, Costa 85, Kramer 04).

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