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A novel class of uplink OFDM/SDMA algorithms for WLAN

机译：WLAN的一种新型上行ofDM / SDMA算法

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Wireless LANs (WLANs) still offer low capacity compared to conventional wired LANs. The design of high-capacity WLANs is impeded mainly by the impairments of the indoor channel and by bandwidth and transmit-power restrictions. To mitigate these, we previously [1] proposed an OFDM/SDMA approach that combines the advantages of Orthogonal Frequency Division Multiplexing (OFDM) with those of Space Division Multiple Access (SDMA). However, the comparison of two uplink OFDM/SDMA algorithms, respectively based on the minimum-mean-squared-error and maximum-likelihood criterion, revealed a serious performance and complexity gap between them. In this paper; we propose a novel class of uplink OFDM/SDMA algorithms that bridge this gap. To this end, we introduce per-carrier successive interference cancellation and interference-dependent state insertion. Compared to the minimum-mean-squared-error approach, a performance gain of 10 dB is obtained for a BER of 10{sup}(-3). This improvement comes at less than three times the initial implementation cost.
机译：与传统的有线LAN相比，无线局域网（WLAN）仍然提供低容量。高容量WLAN的设计主要是由室内信道的损伤和由带宽和发射功率限制的阻碍。为了缓解这些，我们之前[1]提出了一种OFDM / SDMA方法，该方法将正交频分复用（OFDM）与太空分割多次访问（SDMA）的优点相结合。然而，基于最小均值误差和最大似然标准的两个上行ofdm / sdma算法的比较，揭示了它们之间的严重性能和复杂性间隙。在本文中;我们提出了一种新颖的一类桥接这种差距的UPDM / SDMA算法。为此，我们介绍每载流量连续的干扰消除和干扰依赖状态插入。与最小均值误差方法相比，为10 {SUP}（ - 3）的BER获得了10dB的性能增益。这种改进的初始实施成本不到三倍。

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