Abstract
In this contribution, we investigate the properties of serially- concatenated coding (SCC) schemes with differential PSK modulation. The differential encoder (DE), which can be interpreted as a recursive non-systematic convolutional code, serves as a component encoder of the SCC system. A novel non-coherent reception algorithm is proposed, which is capable of bridging the performance gap between coherent and non-coherent receivers by iteratively exchanging extrinsic information. Since no prior channel state information (CSI) is available for the proposed non-coherent decoding approach, a low-complexity APP channel estimator is devised and incorporated to provide estimated channel coefficients using the a posteriori probability (APP) generated by the inner decoder. Results of SCC schemes with absolutely-encoded coherently-detected PSK are also presented to demonstrate that differential systems do not necessarily cause performance degradation.
| Original language | English |
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| Title of host publication | IEEE Wireless Communications and Networking Conference, WCNC |
| Pages | 3969-3973 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 21 Aug 2013 |
| Event | 2013 IEEE Wireless Communications and Networking Conference, WCNC 2013 - Shanghai, United Kingdom Duration: 7 Apr 2013 → 10 Apr 2013 |
Conference
| Conference | 2013 IEEE Wireless Communications and Networking Conference, WCNC 2013 |
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| Country/Territory | United Kingdom |
| City | Shanghai |
| Period | 7/04/13 → 10/04/13 |
Keywords
- APP Channel Estimation
- Differential Modulation
- Iterative Decoding
- Serially Concatenated Coding