For her, the young Englishman who presented himself at her door in 1933 was, at first, a potentially useful helper and source of funds.
Despite the increase of computational overhead at the helpers, neither the source nor the helper have been overwhelmed by the processing associated with cooperation.
As shown in Figure 1(b),,, and represent the source, helper, and destination station, respectively.
As a tentative solution, a new shim header called CoopHeader, which contains the MAC addresses of source, helper, and destination, has instead been inserted between the MAC header and the MAC payload.
A closer scrutiny further suggests that this performance disparity between the helper stations and source stations in a CoopMAC network is an artifact of our present implementation approach, and is expected to disappear once the access to firmware becomes available.
In this paper2, we propose a class of transmission schemes for MIMO-MAC when communication links among the sources (helper nodes) do exist, which is generally true in many wireless storage networks.
Ms. Barnes is one of a growing number of young people for whom the tutor is no longer only study buddy or homework helper, but also a source of general life support.
Use and to denote the jitter observed at each source and helper station.
Once cooperative MAC is adopted, the jitter performance for both source and helper stations can be improved.
(b) COOPPACKET: a packet that is used in CoopMAC for the first hop transmission (source to helper).
