Single Carrier FDMA:A NEW AIR INTERFACE FOR LONG TERM EVOLUTION

详细介绍SC-FDMA的特性及LTE选择SC-FDMA做为上行多址接入技术的原因。

Design of an OFDMA baseband receiver for 3GPP long-term evolution

Abstract—In this paper, we propose a downlink OFDMA processor based on the 3GPP LTE. This processor supports scalable bandwidth for different OFDMA modes. A low-cost sampling rate conversion is employed to obtain different sampling rates for different bandwidths. Timing and frequency synchronization are then designed to recover the time and frequency mismatch between the transmitter and receiver. Afterward, sampling clock offset is tracked and compensated in the frequency domain. Finally, reconfigurable channel estimation and equalization are designed for optimal performance. The circuit architecture is designed and simulated to show that its performance meets the system requirement.

Java求解篮球错排问题

JAVA实现,完整源代码.题目:请编写程序求解篮球错排问题。已知n个篮子一字排开（n为用户输入的任意正整数），从左到右分别标着号：1，2，... ...，n；每个球也有编号，分别也是1，2，... ...，n。现要将这n个球全部放入这n个篮子中，满足：每个篮子放置1个球，球的号不能与其所在的篮子的号相同，且在相邻篮子内的球的球号不能相邻。例如，如果在相邻两个篮子内的球的球号分别为9和10，则是不允许的。请输出所有符合要求的放球方式（对于每种符合要求的放球方式，都应输出在每个篮子中的球号）。

JAVA递归实现全排列

JAVA递归实现全排列算法，含实现源代码,如a、b、c、d的全排列为: abcd abdc acbd acdb adcb adbc bacd badc bcad bcda bdca bdac cbad cbda cabd cadb cdab cdba dbca dbac dcba dcab dacb dabc

JAVA计算器源代码,与WINDOWS的计算器长得一模一样

JAVA计算器完整源代码,与WINDOWS的计算器长得一模一样.^_^java课程设计必做.

JAVA记事本源代码,与WINDOWS的记事本长得一模一样

JAVA 记事本 与WINDOWS的记事本长得一模一样.^_^