The phrase "achievable approximation" is correct and usable in written English.
It can be used in contexts where you want to describe a level of approximation that is realistic and attainable.
Example: "In our calculations, we aim for an achievable approximation of the final results to ensure practicality in our project."
Alternatives: "realistic estimate" or "feasible approximation".
When Ma < Na, the achievable capacity approximation is modified as R s appro ≈ W C iso , (29).
In this paper, we propose a ST k+1)/k+ρ -approximation algorithm to the kSCND, where STρ is any approximation ratio achievable for the Steiner tree problem.
In the general model of verification (i.e., some kind of overbidding can be detected) we provide the first deterministic truthful auctions which indeed provide essentially the best possible approximation guarantees achievable by any polynomial-time algorithm even if the complete input data is known.
However, before we introduce theSNR mapping operation for the encoded system, we show that the cut-set bound rate regions (as introduced in the preceding section) provide a reasonable approximation of achievable source transmission rate pairs in the symmetric WBN system.
Obama achieved the achievable.
Moreover, [17] indicated that the larger the number of users, the better performance achievable due to the Gaussian approximation.
A convex lower bound is updated at each iteration to improve the approximation of the achievable rate region, where a dual Lagrange decomposition and a subgradient method is efficient in obtaining the locally optimal solution.
As one can see in Fig. 13, the achieved transmission rate pairs are relatively close to the maximal permissible values and hence we can consider the cut-set bound rate region (as discussed in Section 6.3) to be a reasonable approximation of the achievable source transmission rate region.
Here, (26) resembles the high SNR approximation of the achievable rate of OFDM transmission with ZF detection as proposed in ([41] Eq. (14)); even more, for fixed L and letting N R grow to infinity, (26) and ([41] Eq. (14)) tend to the same limit, due to channel hardening on each subcarrier with growing number of receive antennas.
