Low complexity ZF precoding in massive MIMO systems
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TN929

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    Abstract:

    The complexity of traditional zero-forcing (ZF) precoding increases due to large-scale antenna technology. We propose a low complexity precoding technique. Firstly, the complexity of the matrix inversion problem is solved by using semi-iteration symmetric successive overrelaxation method (SSOR) technique, then the convergence rate of SSOR technique is accelerated by Chebyshev semiiterative ( SI) method, which makes the zero forcing precoding technology converge quickly. The experimental results show that for Chebyshev semi-iterative accelerated SSOR (SI-SSOR) precoding technique, it can approximate the 95% performance of ZF precoding with 2 iterations, and it takes less computing resources than ZF precoding. Therefore, The SI-SSOR precoding can play one significant technique to resist the influence of the communication interference.

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  • Received:
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  • Online: February 27,2023
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