A land mobile radio system (110) includes a plurality of radio channels (112), each radio channel (112) being interconnectable (115) to any one of a number, N, of combiners (114), and each combiner (114) being associated with a corresponding transmit antenna (120). A combiner output signal at the output of each combiner (114) is connected to a transform matrix (133) which divides each combiner output signal into a number, N, of transformed signals, each transformed signal containing an equal power level part, 1/N, of each combiner output signal. Each transformed signal is provided to an amplifier (135) for amplification thereof, and the amplified transformed signals are provided to an inverse-transform matrix (138) which recombines the equal parts of each amplified transformed signal into amplified combiner output signals which are provided to the antennas (120) for transmission thereof. The land mobile radio system (110) includes N antennas (120), and where N is a power of m, e.g., N = mr then the transform matrix (133) is a Fourier transform matrix using a radix-m decimation-in-frequency algorithm having r stages, and the inverse-transform matrix (138) is an inverse-Fourier transform matrix using a radix-m decimation-in-time algorithm having r stages. IMAGE
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机译：陆地移动无线电系统（110）包括多个无线电信道（112），每个无线电信道（112）可互连（115）到N个组合器（114）中的任何一个，以及每个组合器（114）与相应的发射天线（120）相关联。在每个组合器（114）的输出处的组合器输出信号连接到变换矩阵（133），该变换矩阵将每个组合器输出信号划分为N个变换信号，每个变换信号包含相等的功率电平部分1 /每个合成器输出信号N。每个变换后的信号被提供给放大器（135）以对其进行放大，并且放大后的变换信号被提供给逆变换矩阵（138），该矩阵将每个放大后的变换信号的相等部分重组为放大后的组合器输出信号。天线（120）进行传输。陆地移动无线电系统（110）包括N个天线（120），并且其中N是m的幂，例如，N ＝ m r，则变换矩阵（133）是使用基数-m抽取的傅立叶变换矩阵。 r级的频率中频算法，逆变换矩阵（138）是使用具有r级的基数-m实时抽取算法的傅立叶逆矩阵。 <图像>
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