Simple Nonbinary Coding Strategy for Very Noisy Relay Channels

Puripong SUTHISOPAPAN; Kenta KASAI; Anupap MEESOMBOON; Virasit IMTAWIL; Kohichi SAKANIWA

doi:10.1587/transfun.E95.A.2122

Simple Nonbinary Coding Strategy for Very Noisy Relay Channels

Puripong SUTHISOPAPAN, Kenta KASAI, Anupap MEESOMBOON, Virasit IMTAWIL, Kohichi SAKANIWA

Full Text Views

0

Share
Cite this

Summary :

From an information-theoretic point of view, it is well known that the capacity of relay channels comprising of three terminals is much greater than that of two terminal direct channels especially for low SNR region. Previously invented relay coding strategies have not been designed to achieve this relaying gain occurring in the low SNR region. In this paper, we propose a new simple coding strategy for a relay channel with low SNR or, equivalently, for a very noisy relay channel. The multiplicative repetition is utilized to design this simple coding strategy. We claim that the proposed strategy is simple since the destination and the relay can decode with almost the same computational complexity by sharing the same structure of decoder. An appropriate static power allocation which yields the maximum throughput close to the optimal one in low SNRs is also suggested. Under practical constraints such as equal time-sharing etc., the asymptotic performance of this simple strategy is within 0.5 dB from the achievable rate of a relay channel. Furthermore, the performance at few thousand bits enjoys a relaying gain by approximately 1 dB.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E95-A No.12 pp.2122-2129

Publication Date: 2012/12/01

Publicized

Online ISSN: 1745-1337

DOI: 10.1587/transfun.E95.A.2122

Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)

Category: Coding Theory

Cite this

Copy

Puripong SUTHISOPAPAN, Kenta KASAI, Anupap MEESOMBOON, Virasit IMTAWIL, Kohichi SAKANIWA, "Simple Nonbinary Coding Strategy for Very Noisy Relay Channels" in IEICE TRANSACTIONS on Fundamentals, vol. E95-A, no. 12, pp. 2122-2129, December 2012, doi: 10.1587/transfun.E95.A.2122.
Abstract: From an information-theoretic point of view, it is well known that the capacity of relay channels comprising of three terminals is much greater than that of two terminal direct channels especially for low SNR region. Previously invented relay coding strategies have not been designed to achieve this relaying gain occurring in the low SNR region. In this paper, we propose a new simple coding strategy for a relay channel with low SNR or, equivalently, for a very noisy relay channel. The multiplicative repetition is utilized to design this simple coding strategy. We claim that the proposed strategy is simple since the destination and the relay can decode with almost the same computational complexity by sharing the same structure of decoder. An appropriate static power allocation which yields the maximum throughput close to the optimal one in low SNRs is also suggested. Under practical constraints such as equal time-sharing etc., the asymptotic performance of this simple strategy is within 0.5 dB from the achievable rate of a relay channel. Furthermore, the performance at few thousand bits enjoys a relaying gain by approximately 1 dB.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/transfun.E95.A.2122/_p

Copy

@ARTICLE{e95-a_12_2122,
author={Puripong SUTHISOPAPAN, Kenta KASAI, Anupap MEESOMBOON, Virasit IMTAWIL, Kohichi SAKANIWA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Simple Nonbinary Coding Strategy for Very Noisy Relay Channels},
year={2012},
volume={E95-A},
number={12},
pages={2122-2129},
abstract={From an information-theoretic point of view, it is well known that the capacity of relay channels comprising of three terminals is much greater than that of two terminal direct channels especially for low SNR region. Previously invented relay coding strategies have not been designed to achieve this relaying gain occurring in the low SNR region. In this paper, we propose a new simple coding strategy for a relay channel with low SNR or, equivalently, for a very noisy relay channel. The multiplicative repetition is utilized to design this simple coding strategy. We claim that the proposed strategy is simple since the destination and the relay can decode with almost the same computational complexity by sharing the same structure of decoder. An appropriate static power allocation which yields the maximum throughput close to the optimal one in low SNRs is also suggested. Under practical constraints such as equal time-sharing etc., the asymptotic performance of this simple strategy is within 0.5 dB from the achievable rate of a relay channel. Furthermore, the performance at few thousand bits enjoys a relaying gain by approximately 1 dB.},
keywords={},
doi={10.1587/transfun.E95.A.2122},
ISSN={1745-1337},
month={December},}

Copy

TY - JOUR
TI - Simple Nonbinary Coding Strategy for Very Noisy Relay Channels
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2122
EP - 2129
AU - Puripong SUTHISOPAPAN
AU - Kenta KASAI
AU - Anupap MEESOMBOON
AU - Virasit IMTAWIL
AU - Kohichi SAKANIWA
PY - 2012
DO - 10.1587/transfun.E95.A.2122
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E95-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 2012
AB - From an information-theoretic point of view, it is well known that the capacity of relay channels comprising of three terminals is much greater than that of two terminal direct channels especially for low SNR region. Previously invented relay coding strategies have not been designed to achieve this relaying gain occurring in the low SNR region. In this paper, we propose a new simple coding strategy for a relay channel with low SNR or, equivalently, for a very noisy relay channel. The multiplicative repetition is utilized to design this simple coding strategy. We claim that the proposed strategy is simple since the destination and the relay can decode with almost the same computational complexity by sharing the same structure of decoder. An appropriate static power allocation which yields the maximum throughput close to the optimal one in low SNRs is also suggested. Under practical constraints such as equal time-sharing etc., the asymptotic performance of this simple strategy is within 0.5 dB from the achievable rate of a relay channel. Furthermore, the performance at few thousand bits enjoys a relaying gain by approximately 1 dB.
ER -