List of Acronyms and Abbreviations
| 3GPP | 3G Partnership Project |
| ACK/NACK | Acknowledgement/Negative Acknowledgement |
| AF | Autofocus |
| AM | Amplitude Modulation |
| AMPD | Average Margin Per Device |
| AMPU | Average Margin Per User |
| AMR NB | Adaptive Multirate Narrowband |
| AMR-WB | Adaptive Multirate Wideband |
| AP | Access Point |
| ARPU | Average Revenues Per User |
| ATC | Ancillary Terrestrial Component |
| ATSC | Advanced Television Systems Committee |
| AVC | Adaptive Variable Source Coding |
| B GAN | Broadband Global Access |
| CAM | Content Addressable Memory |
| CCD | Charge Coupled Device |
| CDMA | Code Division Multiple Access |
| C/I | Carrier to Interference Ratio |
| CIF | Common Intermediate Format |
| CMOS | Complementary Metal-Oxide-Semiconductor |
| CQI | Channel Quality Indication |
| CTS | Clear To Send |
| DAN | Device Access/Device Area Network |
| DCT | Discrete Cosine Transform |
| DFT | Discrete Fourier Transform |
| DPSK | Differential Binary Phase Shift Keying |
| DRM | Digital Radio Mondiale |
| DSSS | Direct Sequence Spread Spectrum |
| DWDM | Dense Wavelength Division Multiplexing |
| EXIF | Exchangeable Image Format File |
| FDN | Frequency Dependent Noise |
| FEXT | Far-End Crosstalk |
| FHT | Fast Hadamard Transform |
| GaAs | Gallium Arsenide |
| GEO | Geostationary |
| GIF | Graphic Interchange Format |
| GSO | Geostationary |
| GSO | Geosynchronous |
| HC | Hybrid Coordinator |
| HDMI | High Definition Multi Media Interface |
| HDSL | High Bit Rate DSL |
| HLEO | ‘High’ Low-Earth Orbits |
| HRAN | High Radio Access Network |
| HWIH | Hear What I Hear |
| I/O | Input And Output |
| IDFT | Inverse Discrete Fourier Transform |
| IF | Intermediate Frequency |
| IFHT | Inverse Fast Hadamard Transform |
| ISD | Information Spectral Density |
| ISM | Industrial Scientific Medical |
| LEO | Low-Earth Orbit |
| LLU | Local Loop Unbundling |
| LNA | Low-Noise Amplifier |
| LPDDR2 | Low-Power Double Data Rate 2 |
| LRAN | Lower Radio Access Network |
| M2M | Machine To Machine |
| MAC | Medium Access Control |
| MEMS | Microelectrical Mechanical System |
| MEO | Medium Earth |
| MIDP | Mobile Information Device Profile |
| MIMO | Multiple Input Multiple Output |
| MIPI | Mobile Industry Processor Interface |
| MMS | Multi Media Subsystem |
| NEXT | Near-End Crosstalk |
| NRE | Nonrecurring Expenditure |
| Ofcom | Office Of Communications |
| OFDM | Orthogonal Frequency Division Multiplexing |
| OFDMA | Orthogonal Frequency Division Multiple Access |
| OOK | On/Off Keying |
| OTA | Over The Air |
| P25 | Project 25 |
| PA | Power Amplifier |
| PAL | Phase Alternating Line |
| PAN | Personal Area Network |
| PAR | Peak To Average Ratio |
| PC | Point Coordination |
| PIFA | Planar Inverted F Antenna |
| PMD | Polarisation Mode Dispersion |
| PPDR | Public Protection And Disaster Relief |
| QE | Quantum Efficiency |
| QoS | Quality Of Service |
| RF BOM | RF Bill Of Material |
| ROI | Return On Investment |
| RSSI | Received Signal Strength Indication |
| RTS | Request To Send |
| SC-FDMA | Single-Carrier Frequency Division Multiple Access |
| SDH | Synchronous Digital Hierarchy |
| SHDSL | Single Pair HDSL |
| SiGe | Silicon Germanium |
| SIM | Subscriber Identity Module |
| SIMO | Single Input Multiple Output |
| SIP | Session Initiation Protocol |
| SONET | Synchronous Optical Network |
| STiMI | Satellite And Terrestrial Interactive Multi Service Infrastructure |
| SWIS | See What I See |
| TDD | Time-Division Duplexed |
| TDM PON | Time Division Multiplexed Passive Optical Network |
| TEDS | Tetraenhanced Data Service |
| TIS | Isotropic Sensitivity |
| TRP | Total Radiated Power |
| TSPEC | Traffic Specification |
| UDP | Unacknowledged Datagram Protocol |
| USIM | Universal Subscriber Identity Module |
| VCO | Voltage-Controlled Oscillator |
| VGA | Video Graphics Array |
| VOG | Video Object Groupings |
| VOL | Video Object Layers |
| VOP | Video Object Planes |
| VOS | Video Object Sequence |
| WDM | Wavelength Division Multiplexing |
| WEP | Wireline Equivalent Privacy |
| WPA | WiFi Protected Access |