Hardware-Oriented Construction of a Family of Rate-Compatible Raptor Codes

Zeineddine, Hady; Jalloul, Louay M. A.; Mansour, Mohammad M.

doi:10.1109/lcomm.2014.2323364

Cited by 3 publications

(1 citation statement)

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“…This encoder, called "intra-frame" in this paper, is designed to be rate-compatible (as in e.g. [22]- [25]), where for any two code-rates R > R , the rate-R frame is a concatenation of the rate-R frame and extra redundancy bits. The rate-R L encoded frame can be viewed as a concatenation of a rate-R H N -bit encoded frame, where R H = K N , and D vectors or increments of size ∆ bits each.…”

Section: Problem Setupmentioning

confidence: 99%

Inter-Frame Coding For Broadcast Communication

Zeineddine

Mansour

2016

IEEE J. Select. Areas Commun.

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A novel inter-frame coding approach to the problem of varying channel-state conditions in broadcast wireless communication is developed in this paper; this problem causes the appropriate code-rate to vary across different transmitted frames and different receivers as well. The main aspect of the proposed approach is that it incorporates an iterative rate-matching process into the decoding of the received set of frames, such that: throughout inter-frame decoding, the code-rate of each frame is progressively lowered to or below the appropriate value, prior to applying or re-applying conventional physical-layer channel decoding on it. This iterative rate-matching process is asymptotically analyzed in this paper. It is shown to be optimal, in the sense defined in the paper. Consequently, the data-rates achievable by the proposed scheme are derived. Overall, it is concluded that, compared to the existing solutions, inter-frame coding presents a better complexity versus data-rate tradeoff. In terms of complexity, the overhead of inter-frame decoding includes operations that are similar in type and scheduling to those employed in the relativelysimple iterative erasure decoding. In terms of data-rates, compared to the state-of-the-art two-stage scheme involving both error-correcting and erasure coding, inter-frame coding increases the data-rate by a factor that reaches up to 1.55×.H. Zeineddine and M. M. Mansour are with theand (1−x J ) dc < 1−x otherwise. In addition, X c converges to e −(1−µ) as J → ∞.From Lemma 4, it can be concluded that for an arbitrarily small γ, ∃J such that: X c < e −(1−µ)+γ ∀J > J .Therefore:(1 − x J ) dc < 1 − x ∀x > e −(1−µ)+γ and J > J .

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Section: Problem Setupmentioning

confidence: 99%