IBM 19K4543 Wireless LAN Range, High speed, Medium, Standard, Low speed, MBps, transmit rate

RF frequency band	2.4 GHz (2400 to 2500 MHz)
Number of selectable sub-	North America (FCC): 11
channels	Europe (ETS): 13
	France (FR): 4
	Japan (JP): 1
	Other countries: FCC: 11
	ETS: 13
Modulation technique	Direct sequence spread spectrum (DSSS)
	• CCK for high and medium tranmit
	rates
	• DQPSK for standard transmit rate
	• DBPSK for low transmit rate
Spreading	11-chip Barker Squence
Bit error rate (BER)	Better than 10-5
Nominal outout power	15 dBm

Wireless LAN Range

Range (100	High speed	Medium	Standard	Low speed
bytes user
		speed	speed
data) /	11 MBps			1 MBps
		5.5 MBps	2 MBps
transmit rate
Open office	160 m	270 m	400 m	550 m
envrionment1	(525 ft.)	(886 ft.)	(1312 ft.)	(1805 ft.)
Semi-open	50 m	70 m	90 m	115 m
office	(164 ft.)	(230 ft.)	(295 ft.)	(377 ft.)
environment2
Closed office3	25 m	35 m	40 m	50 m
	(82 ft.)	(115 ft.)	(131 ft.)	(165 ft.)
Receiver	-83 dBm	-87 dBm	-91 dBm	-94 dBm
sensitivity
Delay spread	65 ns	225 ns	400 ns	500 ns
(at FER of
<1%)

Appendix A. Product specifications A-3