Sentence examples for relay exists from inspiring English sources

If no qualified relay exists, the user will retransmit its original signal s1 again.

If the total system capacity cannot support the current transmission rates, i.e., R 1 + R 2 > C sumrate, the cooperative scheme in [7] will be employed, where a round robin scheduling is applied to two users while no qualified relay exists; otherwise, a network coding-based approach is applied for user scheduling.

Under the situation where multiple relays exist, the performance of the best linear unbiased estimation (BLUE) and linear minimum mean square error (LMMSE) estimation was respectively investigated in [11, 12].

Due to noise amplification at relays, there exists a rate performance ceiling for the source-relay-destination (SRD) link, thus spending extra power in relaying will not help increase the secrecy rate after a certain point is reached.

Since the purpose of EECC is to maximize the energy efficiency, EECC always employs a SU relay if there exists any SU relay available.

In the two-way relay channel (TWRC), there exists a relay that facilitates exchange of messages between two nodes.

Despite the effectiveness of the MUSwiD and MUSwiDps user selection schemes in reducing the amount of feedback signaling from users to the relay, there exist some challenges that should be addressed before the multiuser switched diversity selection schemes can lend themselves for practical implementation.

During conscious brain states, thalamocortical relay neurons exist in a relatively depolarized state, and respond to incoming excitatory inputs in the tonic 'relay' mode (Steriade et al., 1993).

However, these DSTBCs were devised for relay networks where there exists one active relay node and a direct communication link between the source and the final destination.

Various cooperative relaying schemes exist in literature and two of the most well-known are amplify-and-forward (AF) and decode-and-forward (DF) protocols.

In addition, more complex phosphotransfer relays also exist which involve multiple phosphotransfer reactions among domains that can be found on separate polypeptides or as part of multi-domain proteins [ 4- 6].