The Next Generation Broadband Wireless Communication Network (LTE
Abstract
—The Next Generation Broadband Wireless Communication (3G & 4G) Cellular Networks use completely new physical layer signalling techniques. Some of the most important techniques introduced are Orthogonal Frequency Division Multiplexing (OFDM) based multiple access in Down-Link (DL) and Single Carrier Frequency Division Multiplexing based multiple access in Up-Link (UL) as used in 3GPP-Long Term Evolution (LTE). The access bandwidth is scalable from 1.4 MHz up to 20 MHz. Use of advanced Multiple Input Multiple Output (MIMO) antenna signalling procedures are also key features of beyond 3G systems. However, high demand on data speed has pushed the operators to looking for 3.5G system. 3.99G networks are defined as longterm evolution for the existing 3G network and it will be based on OFDM and MIMO technologies. 4G networks were not yet defined, but requirement is to support heterogeneous networks at 100 Mbps mobility data speed.
References
2. www.en.wikipedia.org/wiki/4G 3. www.4g.co.uk 4. www.uscwc.com/4GReport 5. www.four-g.net/ 6. www.qualcomm.com/lte_advanced 7. 3GPP TR 25.913 ‘Feasibility Study of Evolved UTRA and UTRAN’. 8. 3GPP TS 25.104 ‘Base Station (BS) radio transmission and reception (FDD)’. 9. 3GPP TS 25.105 ‘Base Station (BS) radio transmission and reception (TDD)’. 10. http://en.wikipedia.org/wiki/MIMO
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