Abbreviations
| 3GPP | 3rd Generation partnership project (produces WCDMA standard) |
| 3GPP2 | 3rd Generation partnership project 2 (produced cdma2000 standard) |
| AAL2 | ATM Adaptation Layer type 2 |
| AAL5 | ATM Adaptation Layer type 5 |
| ABB | Analog baseband |
| ACELP | Algebraic code excitation linear prediction |
| ACIR | Adjacent channel interference ratio, caused by the transmitter non-idealities and imperfect receiver filtering |
| ACK | Acknowledgement |
| ACL | Access control list |
| ACLR | Adjacent channel leakage ratio, caused by the transmitter non-idealities, the effect of receiver filtering is not included |
| ACTS | Advanced communication technologies and systems, EU research projects framework |
| ADC | Analog to digital conversion |
| AGC | Automatic gain control |
| A-GW | Access gateway |
| AICH | Acquisition indication channel |
| ALCAP | Access link control application part |
| AM | Acknowledged mode |
| AM | Amplitude modulation |
| AMD | Acknowledged mode data |
| AMR | Adaptive multirate (speech codec) |
| AMR-NB | Narrowband AMR |
| AMR-WB | Wideband AMR |
| ARIB | Association of radio industries and businesses (Japan) |
| AOL | America on-line |
| AP | Access point |
| ARP | Allocation and retention priority |
| ARQ | Automatic repeat request |
| ASC | Access service class |
| ASN.1 | Abstract syntax notation one |
| ATM | Asynchronous transfer mode |
| AWGN | Additive white Gaussian noise |
| AWS | Advanced wireless services |
| BB | Baseband |
| BB SS7 | Broadband signalling system #7 |
| BCCH | Broadcast channel (logical channel) |
| BCFE | Broadcast control functional entity |
| BCH ... |
