Add Discrete Task-Oriented Deep JSCC model implementation and update imports

Author: selimfirat

docs/references.bib

@@ -840,3 +840,13 @@ @article{yilmaz2025learning
   journal={arXiv preprint arXiv:2504.03690},
   year={2025}
 }
+
+@ARTICLE{xie2023robust,
+  author={Xie, Songjie and Ma, Shuai and Ding, Ming and Shi, Yuanming and Tang, Mingjian and Wu, Youlong},
+  journal={IEEE Journal on Selected Areas in Communications},
+  title={Robust Information Bottleneck for Task-Oriented Communication With Digital Modulation},
+  year={2023},
+  volume={41},
+  number={8},
+  pages={2577-2591},
+  doi={10.1109/JSAC.2023.3288252}}

kaira/models/image/__init__.py

@@ -19,6 +19,10 @@
     Tung2022DeepJSCCQDecoder,
     Tung2022DeepJSCCQEncoder,
 )
+from .xie2023_dt_deepjscc import (
+    Xie2023DTDeepJSCCDecoder,
+    Xie2023DTDeepJSCCEncoder,
+)
 from .yilmaz2023_deepjscc_noma import (
     Yilmaz2023DeepJSCCNOMADecoder,
     Yilmaz2023DeepJSCCNOMAEncoder,
@@ -45,6 +49,9 @@
     "Tung2022DeepJSCCQDecoder",
     "Tung2022DeepJSCCQ2Encoder",
     "Tung2022DeepJSCCQ2Decoder",
+    "Xie2023DTDeepJSCC",
+    "Xie2023DTDeepJSCCEncoder",
+    "Xie2023DTDeepJSCCDecoder",
     "Yilmaz2023DeepJSCCNOMAModel",
     "Yilmaz2023DeepJSCCNOMAEncoder",
     "Yilmaz2023DeepJSCCNOMADecoder",