{
  "annotation_id": "32f26a07-6e4f-4f12-8541-5c0eb76133b3",
  "date_created": "2026-02-17T05:53:12.364000Z",
  "date_modified": "2026-02-17T05:53:12.364000Z",
  "file_hash": "a84a678f55346348c9a48aa0f6af7203d14a99440de980ea013f212ca0bc8446",
  "private": false,
  "record": {
    "abstract": "In the literature, it has been shown that the secrecy capacity of the additive white Gaussian noise (AWGN) wiretap channel with noise-free feedback equals the capacity of the same model without secrecy constraint, and the classical Schalkwijk-Kailath (SK) scheme achieves the secrecy capacity. In this paper, we show that in finite blocklength regime, the SK scheme is not optimal, and propose a modified SK scheme which may perform better than the classical one. Besides this, this paper establishes a finite blocklength converse for the AWGN wiretap channel with feedback, which can also be viewed as a converse for the same model without secrecy constraint. To the best of the authors\u0027 knowledge, this is the first paper to address such a problem, and the results of this paper are further explained via numerical examples.",
    "arxiv_id": "2601.07472",
    "authors": [
      "Sheng Su",
      "Yuhan Yang",
      "Chao Qi",
      "Xuan He",
      "Bin Dai",
      "Xiaohu Tang"
    ],
    "categories": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Secure Joint Source-Channel Coding for the AWGN Channel with Feedback: A Finite Blocklength Analysis",
    "url": "https://arxiv.org/abs/2601.07472",
    "version": "v2"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "30a838cf-a1ae-4371-968f-8a0f5f112a6c",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}