一种新型的基于基站协作的分布式turbo编码结构
doi: 10.3724/SP.J.1146.2005.01194
A Novel Distributed Turbo Coding Structure Based on Base Station Cooperation
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摘要: 该文提出了一种基于基站之间相互协作的分布式turbo编码(DTC)结构。它通过把编码后的数据流分别由多个不同基站同时发出，在不降低频谱利用率的前提下获得空间分集增益，从而提高在小区边界的用户的通信质量。由于可以在多个小区范围内分配资源，分布式编码结构也能提高在繁忙小区用户的资源分配成功率。针对提出的分布式turbo编码结构，文中给出了5种不同的具体实现方案，并分析了它们在非对称AWGN信道下的误码性能以及资源分配成功率。该文提出的编码结构和实现方案既适用于多基站系统，也适用于分布式基站系统。Abstract: A Distributed Turbo Coding (DTC) structure based on Base Station (BS) cooperation is proposed in this paper. By transmitting the data after coding through several different BS, The spatial diversity gain can be obtained at the same bandwidth efficiency, thus the communication quality of the user can be enhanced in cell boundary. Because the resources are allocated among several cell range, distributed coding structure also can improve the resource alloc success probability of the users in heavy cell. Based on the DTC structure proposed in this paper, five different realizable schemes are given, and their BER performance and resource alloc success probability are analyzed in asymmetric AWGN channel. The coding structure and realizable schemes given in this paper can also be applied to multiple BS system and distributed BS system.
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