which is better bandwidth 20mhz or 40mhz

Ona non-MIMO setup (i.e. 802.11 a, b, or g) you should always try to use channel 1, 6, or 11. If you use 802.11n with 20MHz channels, stick to channels 1, 6, and 11 -- if you want to use 40MHz ifyou find that client wireless card technical specs you can get an idea about what you can expect. As you already know 802.11n speed depend on Channel width (20MHz vs 40MHz) & number of supported spatial streams. eg in 40MHz (channel bonding) 1SS -> 150Mpbs, 2SS -> 300Mbps, 3SS -> 450Mbps & 4SS -> 600 Mpbs. 1] When I use my home AP on channels 1-11, there is an uplink connection quickly, everything works fine. If I set my home AP to channel 12 or 13 (Fritzbox, 20MHz bandwidth), no uplink connection succeeds, never. Is there a limitation or 80211a OFDM Signal and Physical Layer Overview. IEEE 802.11a/g and HIPERLAN/2 signals are pulsed (or burst) type signals. The total channel bandwidth is 20 MHz with an occupied bandwidth of 16.6 MHz. A single OFDM symbol contains 52 subcarriers; 48 are data subcarriers and 4 are pilot subcarriers. The center, "DC" or "Null", zero subcarrier is download lagu feel my rhythm red velvet.

which is better bandwidth 20mhz or 40mhz