| Title: |
TMO Progress Report 42-137 May 15, 1999 The Combined Effect of Modulator Imbalances and Amplifier Nonlinearity on the Performance of Offset Quadrature-Phase-Shift-Keyed (OQPSK) Systems |
| Authors: |
Tsou Imbalances From; I. Introduction; H. Tsou |
| Contributors: |
The Pennsylvania State University CiteSeerX Archives |
| Source: |
http://tmo.jpl.nasa.gov/tmo/progress_report/42-137/137H.pdf. |
| Collection: |
CiteSeerX |
| Description: |
This article extends such e#orts by including a fully saturated radio-frequency (RF) amplifier in the analytical model. Both carrier-suppression level and bit-error performance are addressed in this article, showing that the amplifier nonlinearity greatly alleviates the impact from modulator imbalances. With current Consultative Committee for Space Data Systems (CCSDS) recommendations of a 2-deg-maximum permissible phase imbalance and a 0.2-dB-maximum permissible amplitude imbalance, a 34-dB or more carrier suppression and a system degradation of 0.27 dB or less at an uncoded biterror probability of 10 -4 are achievable when the OQPSK system is operated in a reasonable loop signal-to-noise ratio (SNR) region. These results are 9-dB better in terms of carrier suppression and 0.6-dB better in terms of system degradation than those with linear amplifiers at the aforementioned bit-error probability. I. |
| Document Type: |
text |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.9.2066 |
| Availability: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.9.2066; http://tmo.jpl.nasa.gov/tmo/progress_report/42-137/137H.pdf |
| Rights: |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| Accession Number: |
edsbas.699D93D4 |
| Database: |
BASE |