It has been adopted in many applications as the standard code for better performance, for example, the IEEE 802.11n, IEEE 802.16e, IEEE 802.20
standards and satellite, wireless and optical communication systems, hard disk drives and flash memories [2-7].
The combination of OFDM and various emergent multiple-input multiple-output (MIMO) standards, such as IEEE 802.11n, IEEE 802.20
, and IEEE 802.22, as a single unit has been suggested in [2-5].
Ak Emarievbe, product marketing manager at Rohde & Schwarz, said his company's general-purpose R&S FSW signal and spectrum analyzer, for example, supports WCDMA/HSPA/HSPA+, 3GPP LTE, GSM/EGPRS/EDGE Evolution/ VAMOS, CDMA2000 1xEV-DO, CDMA2000 1xRTT, TD-SCDMA, GSMR, TETRA, cdmaOne, DECT, WLAN IEEE 802.11a/b/g/j/p/n/ac, ZigBee IEEE 802.15.4, RFID, WRAN IEEE 802.22, WWAN IEEE 802.20
, DVB-H, ISDB-T 1 Seg, CMMB, DVB-T, DVB-T2, ISDB-T, AM, FM, DVB-S, and DVB-S2.
Technology System Data rate IEEE 802.11g/WiFi BAN/PAN 54 Mbps IEEE 802.11n/WiFi BAN/PAN 540 Mbps IEEE 802.15.4 BAN/PAN 240 Kbps IEEE 802.16e/WiMAX WAN 30 Mbps IEEE 802.20
WAN 16 Mbps IEEE 802.22 WAN 18 Mbps WiBro WAN 18 Mbps Technology Cell size Frequency range IEEE 802.11g/WiFi 50-60m 2.4 GHz IEEE 802.11n/WiFi 50-60m 2.4 GHz IEEE 802.15.4 10-30 m 2.4 Ghz IEEE 802.16e/WiMAX Upto 70-80 Km 2-6 GHz IEEE 802.20
>15 km 3.5 GHz IEEE 802.22 40 km 54-862 MHz WiBro 1 km 2.3-2.4 GHz TABLE 3: Mapping based on application, architecture, and sensing.
Being obese appears to affect cognitive function, requiring more effort to complete a complex decision-making task (Timothy Verstynen, PhD, abstract 802.20
Market Opportunities for WiMAx, 802.20
& UMTS TDD technologies
It also said the business case of all new wireless broadband network technologies such as WiMax, 802.20
and Flash OFDM has yet to be proven.
These applications include IEEE 802.16 broadband wireless access and IEEE 802.20
mobile broadband wireless access, wireless local loop (WLL), multipoint microwave distribution system (MMDS, also known as wireless cable) and other cost-sensitive commercial communications systems operating from 6 GHz to 20 GHz.
Previously, Navini has been a key player, along with "4G" rivals Flarion and ArrayComm, in the creation of an alternative wireless broadband standard, known as 802.20
or Mobile Broadband Wireless Access.
However, the emergence of FWB-specific standards like 802.16 and 802.20
will help to grow FWB in its three main applications--last mile connectivity, network back-haul and private networking.
The spectrum exhibit characteristic asymmetric vibrations for the [alpha]-Keggin structure, namely, Si-Oa(1016.55 cm-1), W-Ot (969.25 cm-1), corner-sharing W-Oc-W (917.98 cm-1), edge-sharing W-Oe-W (802.20
cm-1) [26, 27].