C 802 20 03112 A Channel Bandwidth Illustration

C 802. 20 -03/112 A Channel Bandwidth Illustration Prepared by: Walter Rausch, Sprint Broadband

What’s Important About Bandwidth? • Per user performance to exceed 3 G capabilities (with spectral efficiency, drives minimum bandwidth requirements) • Must fit into existing bandplans • Allow the evaluation group to select a test criteria • No system can be designed without specifying a channel bandwidth

Beyond 3 G Performance • We are specifying performance targets beyond that offered by 3 G systems. • Currently, the only competition in this space are fixed systems based on cable or DSL infrastructures. • The goal is mobility with DSL-like performance.

Worldwide Bandplans • Worldwide, nearly all regulatory bodies make spectrum available such that the minimum common divisor is 5 MHz

Test & Evaluation Requirements • Selection of a channel bandwidth is required for the evaluation group to specify test criteria • Final system designs will require the specification of the occupied channel bandwidth

Channel Bandwidth Illustration

Recommendation • A 5 MHz channel bandwidth provides adequate spectrum to meet the 802. 20 PAR • Worldwide, a 5 MHz channel bandwidth fits the current regulatory schema • A 5 MHz minimum specification will scale smoothly to fit large spectrum allocations • In an Nx 5 MHz configuration, N=1, 2, 3, ½, ¼, or another multiple, to allow for sub- or super-channel operation