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TDD spectrum capacity calculator
Convert 100 MHz of TDD cellular spectrum into uplink and downlink throughput
Downlink (DL)
Uplink (UL)
Overhead / guard
4:1
80% DL · 20% UL
64-QAM, MIMO 4×4, typical conditions
Peak downlink
—
—
Peak uplink
—
—
Sector capacity estimate
—
Mbps total
peak sector
peak sector
—
concurrent users
@ 10 Mbps each
@ 10 Mbps each
—
concurrent users
@ 50 Mbps each
@ 50 Mbps each
Calculation assumptions
Channel bandwidth
—
DL time share
—
UL time share
—
Overhead / guard period
—
Spectral efficiency (peak)
—
MIMO spatial streams
—
Modulation assumption
—
Real-world derating
~40–60% of peak
TDD = Time Division Duplex. DL and UL share the same 100 MHz channel — time-slotted by the base station scheduler. Peak values assume full load on one sector under ideal RF conditions. Actual throughput depends on loading, interference, and device capability.
