1300 AP times 2? one for send one for receive?

Question

Hello,
i was hoping to increase the speed of the network.
im using a simple setup to bridge two buildiings (see config below).
is it possible to config two AP's on each side to be dedicated - one to send and one to receive?
(with similar setup on the other end).
currently when i send a 100MB file it takes 60 seconds which is poretty crappy for a 54mbps hardware.
the distance is only 600ft between.
using 1310G with build in antennas - would the model with the external antennas give better reception?
thanks!
Building configuration...
Current configuration : 1090 bytes
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
hostname 1
no aaa new-model
dot11 ssid abc
   authentication open
bridge irb
interface Dot11Radio0
no ip address
no ip route-cache
ssid abc
speed  basic-1.0 basic-2.0 basic-5.5 basic-11.0 basic-6.0 basic-9.0 basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0
station-role root bridge
bridge-group 1
bridge-group 1 spanning-disabled
interface FastEthernet0
no ip address
no ip route-cache
bridge-group 1
bridge-group 1 spanning-disabled
interface BVI1
ip address 172.16.3.120 255.255.248.0
no ip route-cache
ip http server
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
bridge 1 priority 9000
bridge 1 protocol ieee
bridge 1 route ip
line con 0
login
line vty 0 4
login local
end

Answer 1

Your transfer time doesn't look crappy to me at all.
54Mbps data rate gives 20Mbps real throughput at the very best. 20Mbps means you will transfer 2 to 3 MB in a second, so 100MB will take 50 seconds ... Expected
If you are thinking about buying a second bridge, you're maybe better using 11n bridges. A 1260 could do the job. Put your bridge on the 5ghz and bond channels to 40Mhz, you then have double the throughput and no interference from 802.11b/g. You'll see speeds of over 100 (real) Mbps.
Some people already did 2 bridges side by side on different channels and configuring them in etherchannel but that's a bit funky.
One bridge that would receive and one that would transmit is a concept against the standard itself, you have to receive the ACK to the frame you just sent, you can't rely on another device receiving that.
Nicolas