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A comparison of manchester symbol tracking loops for block 5 applications
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Holmes, J. K. |
| Copyright Year | 1991 |
| Description | The linearized tracking errors of three Manchester (biphase coded) symbol tracking loops are compared to determine which is appropriate for Block 5 receiver applications. The first is a nonreturn to zero (NRZ) symbol synchronizer loop operating at twice the symbol rate (NRZ x 2) so that it operates on half symbols. The second near optimally processes the mid-symbol transitions and ignores the between symbol transitions. In the third configuration, the first two approaches are combined as a hybrid to produce the best performance. Although this hybrid loop is the best at low symbol signal to noise ratios (SNRs), it has about the same performance as the NRZ x 2 loop at higher SNRs (greater than 0-dB E sub s/N sub 0). Based on this analysis, it is tentatively recommended that the hybrid loop be implemented for Manchester data in the Block 5 receiver. However, the high data rate case and the hardware implications of each implementation must be understood and analyzed before the hybrid loop is recommended unconditionally. |
| File Size | 600440 |
| Page Count | 17 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910009010 |
| Archival Resource Key | ark:/13960/t2c876g98 |
| Language | English |
| Publisher Date | 1991-02-15 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Radio Frequencies Error Analysis Signal To Noise Ratios Phase Detectors Space Communication Receivers Signal Processing Bit Synchronization Frequency Synchronization Tracking Position Digital Data Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
