Model 5G TDD throughput with flexible radio inputs. Compare downlink and uplink efficiency in seconds. Plan networks better using practical scheduling and overhead assumptions.
Automatic PRB lookup covers common bandwidth and subcarrier spacing pairs. For uncommon allocations, enter a PRB override value.
| Range | BW | SCS | PRB | Mod | Rate | DL Layers | UL Layers | DL % | UL % | OH % | Util % | CA | DL Mbps | UL Mbps |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FR1 | 100 | 30 | 273 | 256QAM | 0.93 | 4 | 2 | 75 | 20 | 10 | 90 | 1 | 1658.37 | 221.12 |
| FR1 | 50 | 30 | 133 | 64QAM | 0.85 | 2 | 1 | 70 | 25 | 12 | 85 | 1 | 238.67 | 42.62 |
| FR1 | 10 | 15 | 52 | 16QAM | 0.75 | 2 | 1 | 60 | 30 | 14 | 80 | 1 | 21.64 | 5.41 |
Base Throughput (bit/s) = PRBs × 12 × Symbols per Slot × Slots per Second × Modulation Order × Code Rate × (1 - Overhead) × Utilization × Carrier Aggregation
Downlink Throughput = Base Throughput × Downlink Layers × Downlink TDD Share
Uplink Throughput = Base Throughput × Uplink Layers × Uplink TDD Share
Symbols per Slot = 14 with normal cyclic prefix.
Slots per Second = 1000 × (SCS / 15).
1. Select the frequency range for your radio case.
2. Enter the channel bandwidth and subcarrier spacing.
3. Leave PRB override blank for auto lookup, or enter your own PRB value.
4. Choose the modulation order and enter the expected code rate.
5. Add downlink layers, uplink layers, and TDD ratio values.
6. Enter overhead, scheduler utilization, and carrier aggregation count.
7. Submit the form to view downlink, uplink, and total throughput.
8. Use the CSV or PDF button to save the current result.
A 5G TDD throughput calculator helps network teams estimate realistic radio capacity before deployment. It turns common planning inputs into fast downlink and uplink speed estimates. That saves time during design, optimization, and site expansion work.
TDD throughput depends on more than channel bandwidth. A strong estimate also needs subcarrier spacing, modulation order, coding rate, MIMO layers, scheduler utilization, protocol overhead, and traffic split between downlink and uplink. When those values change, practical cell capacity also changes.
This calculator uses resolved physical resource blocks when possible. It can estimate PRBs from common bandwidth and subcarrier spacing pairs, or it can use a manual PRB override. That makes the page useful for standard layouts and custom planning cases.
The result area shows downlink throughput, uplink throughput, total estimated throughput, effective guard share, slots per second, and resolved PRBs. These values help engineers compare deployment choices quickly. They also support rough capacity studies for enterprise access, fixed wireless, and dense urban traffic patterns.
Because TDD shares spectrum between directions, the downlink ratio and uplink ratio matter a lot. A network tuned for video traffic usually reserves more downlink share. A network serving cameras, sensors, or industrial uploads may need more uplink share. This calculator lets you model both cases without changing the full workflow.
The formula here is an engineering estimate. Real field results still depend on signal quality, interference, user distribution, beamforming behavior, control channels, retransmissions, and vendor scheduling logic. For that reason, overhead and utilization controls are included. They help you move from theoretical numbers toward practical planning values.
Another benefit is speed during comparison work. You can test wider channels, higher layers, stronger coding choices, or different utilization assumptions in seconds. That makes the page useful during customer meetings, pre-sales design reviews, and internal radio strategy sessions where several capacity scenarios must be checked quickly. It also helps teams document assumptions before detailed simulation starts. That improves alignment between radio, transport, and commercial planning teams.
Use this page during coverage planning, transport sizing, proposal work, or classroom study. Enter your radio assumptions, submit the form, review the calculated throughput, and export the result as CSV or PDF for reporting.
TDD throughput is the estimated data capacity of a time division duplex radio link. It separates downlink and uplink shares across the same spectrum resource.
They control how much time resource goes to each traffic direction. A higher downlink share usually improves download speed, while a higher uplink share helps upload-heavy services.
Field performance changes with signal quality, control overhead, retransmissions, interference, user mix, mobility, beamforming behavior, and scheduler decisions. This page is for planning, not guaranteed live speed.
PRB override lets you enter a custom physical resource block count. Use it when your deployment uses an uncommon bandwidth and subcarrier spacing combination or vendor-specific allocation.
Yes. Select FR2 and choose a supported subcarrier spacing. If your exact bandwidth pair is not in the lookup, enter the PRB value manually.
In this estimate, carrier aggregation scales the available resource base. Actual gains still depend on implementation limits, band support, device capability, and scheduling efficiency.
They help reduce optimistic theoretical numbers. Overhead accounts for signaling and reserved resources, while utilization reflects realistic scheduler loading and network behavior.
It is better for engineering estimation, proposal work, and quick comparison studies. Acceptance testing should use vendor tools, drive data, counters, and measured radio conditions.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.