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针对宽带OFDM的多用户对双向中继无线网络,为了进一步提高系统和速率与误码性能,本文首先提出了一种基于最大化和速率的空频联合信道配对算法,同时推导了该算法低复杂度的闭式表达式,随后引入空频联合注水功率分配算法.仿真结果表明,同仅有空间配对和无空频信道配对算法相比,所提出的最大化和速率空频信道配对方案可以明显提高系统的和速率与误码率性能;同空频等功率分配相比,空频维注水功率分配在中低信噪比区间能有效地提高系统误码性能.
In order to further improve the system and the rate and error performance for wideband OFDM multi-user to two-way relay wireless networks, this paper first proposed a space-frequency joint channel matching algorithm based on maximization and rate, and at the same time derived the low complexity Then the closed-form expression of degree and frequency is introduced, and then the joint space-frequency waterfilling power allocation algorithm is introduced.The simulation results show that the proposed maximization and rate space-frequency channel matching scheme can be obviously compared with the space-only pairing and no-space channel pairing algorithm Improve the system’s rate and bit error rate performance; compared with the space frequency and other power distribution, space-frequency dimension water power distribution in the low signal-to-noise ratio range can effectively improve the system error performance.