On 2015-01-14, Stefan Sperling <s...@stsp.name> wrote: > 15Mbit/s sounds as if it maxes out at 18Mbit/s (the highest QPSK rate) > and never switches to OFDM rates (24 - 54 Mbit/s).
IEEE 802.11 still uses a shared medium and CSMA/CA, right? (Wikipedia says so.) So the transfer between two nodes is effectively half-duplex. The overhead from switching the transmission direction back and forth will alone reduce your throughput substantially. Leaving TCP ACKs aside, the 802.11 layer 2 protocol also acks data frames, so even strictly unidirectional data transfers on a higher layer will suffer from underlying carrier turnaround. -- Christian "naddy" Weisgerber na...@mips.inka.de
